It’s incredibly easy to fuck your partitions to hell and back, especially through Windows.
Fun fact: Windows won't allow you to delete any EFI partition (that is the only one I know of/tried) unless its through diskpart
with a specific override/force option.
But then again, I somehow nuked my recovery partition by accident at some point as well.
It's not like GNOME is the only outlier here (for the specific icon problem sure), someone on the linux subreddid also posted this screenshot https://imgur.com/a/1ELtsJb. It seems to really just be that KDE apps kinda struggle out side of KDE. And most of the GNOME devs do care about the users as well, just they also care that their apps look as intended.