Totally agree with this. Except, I've never liked the KDE look and feel. It's like the worst glossy cartoon ui ever. Yuk. To be fair, I haven't looked at it recently, so the gloss might have been toned down or removed.

But to your point of bug fixing, I absolutely agree. macOS is plagued by this as well, but mot to the degree Linux DE's are.

I've used multiple desktops since the 90's and loved it. macOS has had support for a while, but the animation switching from desktop to desktop was horrendous. I got a utility to fix that, but it's a joke they don't just include a checkbox to toggle the animations. This is one huge UX fail in my mind.