Probably not a big problem for Sony, but as someone who bought the game I am kind of pissed about that.
But I totally agree with you about Sony being hypocritical.
The only reason this particular case is weird is because its a Microsoft account on Playstation.
Not saying it's a good practice, but I don't know if in that case I would solely attack Microsoft.
But either ways, it's not relevant to this situation. We are talking of game.being made available. Not about whether it has login to the parent company or not.
Let's not forget that Sony was the last to allow cross platform multiplayer on Minecraft.
Microsoft accounts ask for a lot of personal information that they simply don't need, and I feared that opting not to provide that personal information would likely put my account at risk for being capriciously banned by bureaucratic anti-botting systems in the future. Furthermore, should I ever need a Microsoft account for some more important reason, I would not want that connected to an account I game online with. Mixing work and play is a bad idea, and having two separate accounts seems like a likely setup for a capricious ban sometime in the future. So yeah, I once bought this game from Notch and had a legit account for it, but now I have to pirate it because Microsoft decided to get invasive and nosy.