If GTK+libadwaita is "native" for linux, then give me a custom UI. I grew up in the 80s and 90s and remember when every program rolled its own UI. It sucked,

If GTK+libadwaita is "native" for linux, then give me a custom UI. I grew up in the 80s and 90s and remember when every program rolled its own UI. It sucked, but modern GTK is in many ways worse.