Early access should at least be playable without all of the bugs and problems that players are seeing. A “prerelease” should be a playable game with minor bugs.
Essentially what larian did was release a shell and suckered people into paying to be beta testers. There’s a difference between beta testing a game and paying for a playable prerelease
You just misunderstand what "Early access" is.
Its not a "pre-release" or any kind of "get the game before other people". Despite the name being misleading to those who dont know, and never bothered to read about it, this is a beta - released as as such only under a different term for purposes of marketing - in order to get some money and early public reactions - which are then more or less incorporated into the further development. The bugs, the glitches, various missing dialogues or cobbled quests, the lack of full optimization - thats all a part of the "early access" - which is basically a public beta.
Once the game is actually complete you will get the full game without spending another dollar or euro on it.
Thats what you bought too.
This right now is a stage of polishing. And the feedback they get from many players is helping polishing it and changing it and improving it.
The players in turn get an early, unpolished but representative experience to see what the studio intends for the game, its story, mechanics and so on.
Your silly complaints only mean you never bothered to check what the early access really is, because it felt better to you to just imagine its some kind of "early demo - release". It isnt, nobody ever said it is and Steam and Valve made sure to explain all that very clearly so they are covered from any accusations like yours.
Now you know. So you can stop being ridiculous.