Metux (Enrico Weigelt) was banned from the Xorg project because his patches kept breaking things, often in ways which demonstrated he didn't even do the bare minimum before pushing commits. Like, adding code which didn't even compile. It's fascinating to look through the huge pile of commits they had to revert after banning him, to see how bad a lot of it is. I picked a few at random, and ... wow.

So he started his own fork.

The ban didn't seem to have any relation to politics or personal behavior. However, he was widely known for being ... how to put it in a way which is acceptable here ... uh, difficult to deal with. Like, after Linus Torvalds made a vow to be nicer, he made an exception just one time... for metux. He was the only person obnoxious enough to get Linus to break his vow. Which, if I recall correctly, was how he ended up focusing on the Xorg project. After getting booted from Linux, he picked a different project.

That's who is in charge of XLibre.

Things didn't get political until he announced the fork. Because, although politics had nothing to do with him getting banned (either time), he framed it as if he was being targeted for political reasons, and used inflammatory political language in the project's documentation. This gained a lot of attention and caused a lot of controversy, and also had the effect of ensuring the contributors all had mostly the same political views.

Anyway, the number of commits doesn't tell much of the story. The content of the commits (especially the reverted ones at Xorg) are far more enlightening.