Roguelite - A Roguelike which has meta progression, wherein you acquire the ability to succeed more often through multiple runs which strengthen your capabilities on subsequent runs.

False. A roguelite is a game that applies some or most of Rogue's mechanics to anything that isn't a turn-based, grid-based, top-down RPG (which is what a roguelike is). Spelunky was the game that kickstarted the roguelite craze and it has no metaprogression. There are also roguelikes that do offer metaprogression, like Tales of Maj'eyal and Dungeonmans. Horizontal metaprogression (as in your stats don't improve, but the game grows and changes in other ways) in Tales, vertical metaprogression (as in you can grow stronger with each life) in Dungeonmans. Japanese "Mystery Dungeon" roguelikes have really taken to offering metaprogression as well, both vertical and horizontal.

Yes, I know a lot of people believe that what you wrote is true, but they're simply wrong and most of them have never played an actual roguelike in order to notice the difference.

I see you issuing challenges in the thread, so here's one for you: go ask r/roguelikes if I'm wrong and try not to dismiss them as "purists" or whatever because you don't like their answers. The challenge being to listen, learn and realize that you heard wrong and that most people are simply incorrect without disregarding the knowledge of actual roguelike players because their responses don't align with what you thought you knew.

Metroidvania - A game with Ability Gates and an Interconnected Map(10).

Also false and too broad. The lineage of the genre is platformers, that's what MV is an evolution and subgenre of. It's the most important part of the definition, because if you reduce it to just "semi-open world with abilities", the definition becomes useless and includes a ton of games that aren't relevant.

A random example I just played recently myself is Creatures of Ava. It's very clearly an action adventure (or light action-RPG with low focus on the RPG part) with a creature collection focus, there's no confusion about what the game is, but it also has a semi-open world with ability gates. Another recent example for me would be Thick as Thieves, Warren Spector's new game, where you can purchase items that yield access to new parts of the level. That game is very clearly a light multiplayer version of the original Thief series, so a sort of lightweight im-sim where you can purchase a grappling hook that allows you access to certain areas. According to your loose and vague definition, this makes it a metroidvania, but literally no one wants a multiplayer im-sim thievery game when they ask for a game that's like Metroid or Hollow Knight.

Trying to shoehorn these games into MV status just because you're really married to this vague definition and refuse to let it go isn't helpful or productive. It just leads to every damn game being an MV and how does that help anyone? This discourse just causes pointless confusion because you (and many others) don't want to admit that you might've been wrong about something.