No it isn’t. Stop making shit up.
I've even seen benchmarks. In my own experience it's slow where default KDE5 is fast. I didn't dig why, because I'm not going to use a full-fledged DE over my cozy FVWM setup anyway.
Also accusing better people than you of lying is impolite.
Gnome is easily the most consistent DE out there. By far. Honestly, by far and away the most consistent. Even MacOS is less consistent, and that’s saying something.
I already guessed that's your opinion, but OK. "Even"? It's the same horror as MacOS.
So a Windows UX clone. Not everything has to be yet another Windows clone. What happened to you not preferring Windows UX lol
It can look like Gnome 3 UX clone too, and that's how it looked when I used it. Just more consistent and usable.
Anyway, there's such a thing as ergonomics. It's not really subjective, it can be measured in clicks and keystrokes, with accounting for mistakes and searching for elements of UI. Gnome devs are clearly ignorant of it.
MacOS and Gnome are sometimes worse than even modern Windows in that regard.
BTW, about Windows - w2k and xp were very good in terms of ergonomics.