The fuck up is not the feature, but how this is all being communicated, executed.
You could be banned even from your own private instances, and as far as we know maybe even from running the game offline. And I say as far as we know because the rules are not explicit. It's a communication disaster.
Especially because Mojang says all the time how they respect the community and ask for their input before implementing any new features and this comes in a silent minor update (1.19.1).
Bonus points for the product team that gave a gift for everyone to transition for a Microsoft account with the promise that nothing would change. Just a year ago.
The way this is all being handled feels like a privacy invasion.
And this is not even criticizing the quality of the moderation, because nothing was shown, the rules aren't clear.
The chances of you losing literally years of a personal game with some friends on a private server, that some people even create content from, is a real possibility and Mojang is acting like this moderation should be a black box.
They couldn't handle it in a worse way.
You mean how they required everyone to migrate accounts and it cost many people access to the game for which they had already paid?
Especially because Mojang says all the time how they respect the community and ask for their input before implementing stuff.
Nightmarish.