Well... no. Ubuntu, Gnome, KDE, XFCE; they are all high quality desktops. Don't mix the desktop with the applications you're running on it.
> We'll have to endure multi-platform Electron stuff.
Now that is indeed a real issue, and yes, ugh.
Edit: I've misread the original, sorry, so adding a few things: if you're using the default apps or the ones built for that specific environment only, you're good to go with GTK3, QT, whatever. The trouble comes when you mix these, but that is true even for the MacOS. Personally I really dislike the approach of Chrome, not giving a s* how it _should_ look like to look at least a little native.