> but banning someone who cares about it and removing
  > their proposed contributions, feels hostile.

I was curious about this so I did a little digging. It looks like the other developers were not happy with the quality of his contributions. Reading the discussions in https://gitlab.freedesktop.org/xorg/xserver/-/issues/1760 and https://gitlab.freedesktop.org/xorg/xserver/-/issues/1797 sheds a lot of light on the problems. Quoting two comments from the dozens there:

  > @metux i appreciate you maintaining and trying to improve Xorg but
  > this is the second time you break it recently, you really should
  > implement more testing...

and

  > Honestly, I would strongly recommend just not merging anything @metux
  > does from now on. I do not feel that their presence here has been a net
  > positive -- I have seen zero actual bugs solved by any of their code
  > changes. What I have seen is build breakage, ABI breakage, and ecosystem
  > churn from moving code around and deleting code.
  > Xorg could use some actual maintenance, but that means fixing actual
  > bugs and solving real problems.

In my search I also found that the XLibre project description mentions "BigTech moles killing Xorg", XLibre being "free of DEI discrimination" and wanting to "Make X great again!" (https://github.com/X11Libre/xserver). And he posted an antivax conspiracy on the Linux kernel mailing list (https://lkml.org/lkml/2021/6/10/903). And he appears to be a German WW2 apologist (https://web.archive.org/web/20190404153507/https://lists.dyn...). So... there's that too.