As said, you can still play the game without account on Java edition as of now (you have to either use a 3rd party launcher or launch the game from the terminal though)

Anyway, i don't know how the fuck Microsoft wasn't sued for that ""incident""

That there's an open source alternative which is gaining momentum?

Edit: oh bad news the Microsoft

You can log in Minecraft (Java) without using Microsoft authentication servers (and even if we couldn't, we could just mod it in the game tbf)