And don’t forget Crash-Resilient Wayland Compositing that keep applications alive even tho the “compositor” crash, so it does restart without any data loss and the lockscreen protocol, because on xorg if the lockscreen crash then you view the desktop and you have the device unlocked!
No it doesn’t close changeset on every change, 30 days ago I added 123 house numbers in my city with streetcomplete and all of them were in the same changeset.
Because linux doesn’t have deprecated opengl, doesn’t run their own proprietary api for gpu instead of implementing vulkan and last but not least because linux does still have support for 32bit application.