I still find KDE superior in productivity, information density and "useful effects" category.
Apple still has the best "get out of the way, be invisible" UI.
Both are valid ways to approach to a problem, but I like KDE's batteries included, infinitely customizable way better.
I don't think "defaults to windows-like" is a bad choice for newcomers.
I don't customize it heavily either. Move tray, clock and menus to the top, a-la GNOME2, leave taskbar at the bottom, both auto-hidden and narrower than screen.
Add four desktops as a 2x2 grid, re-enable old CTRL+ALT+$ARROW keyboard shortcuts, add a couple of usability effects with custom key combinations and two active corners, and I'm done.
Some applications (Konsole, KATE) get custom fonts and themes, but everything else is bog standard. Setting it up takes 30-ish minutes, and it's the same config for decades now. Probably because of sharpening the same tool and optimizing without knowing.
Then, I can just concentrate and fly on that environment.
Also, they have improved a lot in the small areas where it was lacking. You can use your system without a terminal if you want, plus Baloo works really well.
I would argue that it actually doesn’t go far enough in windows-like-ness to be viable for a lot of people, and for those who prefer a mac-like setup the possible customization doesn’t take it far enough in that direction, either. It’s not Windows or macOS, it’s KDE, and that’s fine but I think there need to be environments more specifically aimed at people who are happy with their current commercial OS setups.
I think KDE has the right spirit but its execution leaves something to be desired.