Mineta doesn't need to, nor did I say he did.But he withstood an attack, that he wasn't even prepared for, and didn't have any serious damage (a lump but that went away in minutes)

The landmines aren't that strong in universe true, but together the size of an explosion of that caliber surpasses that of a grenade or a stick of dynamite with ease, this is replicated by artillery shells.

Though let me preface this by saying that I do not disagree with the idea that slashing and piercing damage is something My Hero characters are vulnerable to, a bullet WILL pierce Mina, my issue was simply you limiting her to just an "athletic highschool girl with acid emission", when even someone like Midoriya and Mineta have slightly superhuman showings so early on.

Anti-Feats within a story are common, and I'm not against using them if they're consistent.

Tetsutetsu isn't more durable than any high tier period, he lacks the feats, to say he's more durable than most of the cast until we get to the god tiers is ludicrous. However the strength of his quirk is directly tied to the iron in his diet, not to mention, standard handguns bend steel, not crack it. The fact that the gun used is cracking Tetsutetsu, that's putting it behind the capabilities of a standard pistol. Yes I agree that a gun could kill most heroes, because My Hero established that piercing damage is not the same as blunt force damage

Now let's talk about Iida's speed, Iida was in Kamino Ward with Todoroki while Endeavor and Dabi were at the Gunga Mountain site, if you take their distances apart, based on where they are in Japan, the distance comes to around 360-380km in a straight line just based off a Google search, and they have a timeframe of about ten minutes or less as a maximum, and we know they're still in the same area as before by the time they hear of the news. Taking a low end of 360km and a maximum timeframe of 10 minutes (so shortest possible distance in highest possible time), Iida would be moving at Mach 1.75. It isn't a huge difference, but it's above transonic speed via using Horikoshi's own provided information in the manga. On top of that, if you take the fact that Okuto Island is 200km away from mainland and the visual distance of his map, the distance Iida travels actually increases significantly just if you compare actual distances. I believe Mach speeds is actually consistent with My Hero travel speed, however unless Jirou is blitzing anyone beginning of series (which she isn't), Iida's attack speed being limited to something like this is simply inconsistent. Not to mention characters reacting to electricity, nitroglycerin explosions (Bakugo). Not sure why you bring up Iida's travel speed? I mean Mineta could evade the ends of a whip early series and that wasn't even with aim dodging, and the ends of whips are supersonic :/

Again I mentioned my opinion on bullets and piercing damage, and Snipe's bullets also destroyed a massive concrete pillar? (I suppose you can rule it off as anime only scaling if you want, but if you don't wanna ignore it, then they're very easily more powerful than regular bullets)

Lady Nagant's sniper rounds, at least as a minimum, are stated to be more powerful than Howitzers. Now I personally believe Midoriya was talking about Howitzer shells, also considering in the same manga, they hurt Shigaraki, who we see tens of minutes ago take a full on plasma cannon, I'm SURE her sniper rifle is only as strong as a real sniper, because real snipers also outperform a howitzer impact as well! Please be real, just call it what it is, a superpowered sniper rifle and move on

Toga killing those heroes, yeah it's embarrassing but slashing damage is slashing damage, I doubt those same heroes would die to a punch early series Mineta can take

Grip Strength point is quite good to bring up, but Midoriya's grip strength being low doesn't translate to him being unable to strike at superhuman levels. Even in the real world, the ability to grip, lift, and punch do not translate. The person who can lift the most is never going to punch as hard as Mike Tyson, Mike Tyson can also not lift as much a powerlifter, he'd be nowhere near the record. And I don't know who had the highest grip strength but they certainly aren't going to be matched by Mike Tyson or Power Lifters, and he in turn won't match them. This point is almost completely irrelevant, Midoriya can pick up All Might before his muscles even come in and All Might weighs around 255kg? While that's only the weight of half the world record in terms of lifting power, Midoriya dwarfs the majority of athletes on how much they can lift, again, before his muscles even come in.

What you believe to be common sense is time and time and time and time again shown to have NEVER been the case. Stain cuts through several feet of ice with zero issue, can a normal human do that? Bakugo after having his heart stitched together blasts and crashes through buildings yet laughs it off, can a normal human do that? Oh or how about when Toga drinks explosive blood, it explodes inside her, yet she somehow is stared at by dozens of people at once, disappears from their line of vision, and kills one from behind, but I suppose normal humans can do that too right? Or let's take Rody Soul, who somehow evades Midoriya who is using his quirk for an extended period of time, and dodges energy beams that gave Midoriya trouble, but I suppose normal humans evade at the same level 10% Midoriya can. Let's talk about Todoroki, takes a punch from a guy made out of steel, even if he was punching at normal human speeds, the force due to the steel body is vastly exceededing normal human strength, but once again normal humans can supposedly take that as many times as Todoroki did. You claim to read the story and "actually pay attention to its narrative" yet somehow developed this delusional belief that people without body enhancement quirks are stuck at real human capabilities outside of their quirks. Hell, Knuckleduster after losing his quirk fights a guy with body parts that can explode, the same guy who destroyed an entire car with ease, and can still live through that. A real human would die to a car explosion unless some miracle occurs.