This really sucks, he was doing a great job as a core contributor. I'm not going to speculate on the why since it looks like internal drama between him and the team, but what shocks me is how sudden he left. He just finished and merged a big PR to rework the project manager UI a day before this tweet.
It is true that the Foundation has parted ways with Yuri. Please respect that we as an organization will not go into further detail, we value protecting any former contractor’s privacy over public demands.
However, due to the rampant speculations out there we see the need to emphasize: This situation has nothing to do with Yuri being of Russian descent (a country he has not resided in since before our contracts). We always have and will continue to condemn personal attacks, on Yuri as well as anyone else we are working with.
Lastly, Yuri was one of many valuable contributors to the project, his absence will be felt. The core team is working hard to ensure that we can continue working efficiently.
Perhaps because text is terrible for conveying intent, dunno. I meant it this cannot not be a small transgression, more like a dramatic emotionally intense event, if it has resulted in people resenting him.
Could be a translation thing but to hurt someone or do something at the magnitude for them to actively resentyou... is a pretty strong word in my part of the globe.
I'm not sure if you're joking since you're on a post from the Godot community, but in case you aren't: Godot is an open source game engine. Anyone can help work on the engine, and game developers can use it for free. While I don't really know much about what goes on with the engine development, it seems like this guy was a major contributor based on other comments.