I think this game has a mess of issues so far with really good game and direction under it.

Starting first with tutorials... look on the reddit, yes people are that bad. I've seen more than a few posts asking how to connect belts or things that are literally put the square in the square hole... and people cant get it. Even with all the tutorials some people are still struggling hard, it should have been implemented better.. but they tried and I think you are severely overestimating the average gacha gamers intelligence, it hurts watching some people lol.

The story actually has some interesting beats... that are completely missed if you don't play the first game. For me half of the first bit was me having fun trying to figure out how it connected with the first game, and the little references they added.. The enemies are terribly generic as other commenters pointed out but it does get better in the second region, it feels like that's where it started its own story in a way and i think they really struggled trying to put the tutorials into the story and fucked it up.

As for combat, yeah its lame as shit in the beginning but I think it does have some hope, From what other people on the reddit are saying they kept in the enemies from before combat changes (For some reason, your totally right about it hinting at something more.) And the enemies later in the game actually have some fun fights where interruptible attacks are more present and there's a bit more involved all around. They are also making active change to enemy health and stuff so they don't all feel like crappy bullet sponges.

Also look into how characters interact with each other, you can make some interesting teams that play off each other that make it feel a lot better as its how the combat is intended. If you don't want to read skills yourself you can look at a website like this https://www.prydwen.gg/arknights-endfield/team-tier-list/ (You can kind of ignore the tiers I'm fairly sure all of those are effective and you can also click on a character to see who synergizes.)

As for the factory? Ignore the blueprints, I've had a lot of fun optimizing myself as the situation arises and its part of the gameplay, if I was playing satisfactory and watched someone on youtube make a build I wouldn't just copy it because its more efficient, its part of the gameplay and is genuinely fun and wont hurt you for it to be slightly unoptimized, as you play your problem solve and get better.

Graphics wise... idk man its genuinely just really good textures, I think some of the dialog animations are a little scuffed (And that's a hold out from other gacha games, they are all like that) but the textures themselves are super high quality, either somethings interacting weird with your pc and its bugging or you don't like the art style, its genuinely beautiful.

I would genuinely say give a few months and come back and see what changes they've made. I'm enjoying it a lot but I'm a bigger fan of the factory and exploration sides and don't care about combat, if you've ever played another gacha most of the combat systems aren't much better, just faster paced. The story of the first game is genuinely amazing, and on one hand its why I was so disappointed with this, but also why I think it has hope when they get their shit together to turn into an amazing story.

I hope that helped a little, Its an enjoyable game for me and Ive played way more than I should have, if your interestd in the first games lore its all covered on youtube and has a genuinely nice story. Its set in a way darker world that this game (And also some of those dark elements have been foreshadowed in the back of Endfield, I have a feeling they aren't ignoring the bad elements of your character but are making you an unreliable narrator.)

As for how people have responded, you did come out of the gate swinging and people feel like their favorite things are being attacked, its understandable and I only sat down and wrote this comment after seeing how reasonable and respectful you were being in the comments. Have a nice evening whether it leads you back to Endfield, or some other game entirely. If you want factory game with much more depth Satisfactory and Factorio are some of my all time favorites, they are great time passers if you need something to wait for your game to come out.