I’m lazy, so… here you go:

https://en.wikipedia.org/wiki/Wayland_(protocol)#Adoption

Initial release of xorg was 2004

Yeah, but XOrg was forked from XFree86.

If you don’t mind the learning curve, Scribus does a good job.

Missed your post before the edit. But I’d like to read your rant on Matrix. Even if it’s just a TL;DR.

https://en.wikipedia.org/wiki/Foster’s_Home_for_Imaginary_Friends

Yes.

Rocks and Diamonds is being actively developed for modern computers.

I haven’t tried installing level packs though.

Great memories.

Apparently Rocks & Diamonds has a Supaplex level collection: https://www.artsoft.org/rocksndiamonds/levels/

Might give it a try…