Honestly W11 window management by default is better than KDE right now.

This was true for W10, but not any more.

KDE window outline defaults (don't have a generic name for setting up the snap zones) take way more effort to set up than the windows version.

I don't think requiring powertoys for extra features matters that much because its supported by the same company. In my opinion, when having something not default truly sucks is when its third party and is finicky and fickle because it requires developers developing vs a moving target.

When its an internal team, they have much more knowledge about how that target will be moving.

Anyhow, that is to say, I think KDE is great, and completely competent, and I love the level of customizability by default, but it certainly has many flaws. Of course its biggest flaw is not its own fault, but that of the catch 22 situation needed to gain critical mass, and the average linux proselytizer doing everything in their power to ensure people don't want to try linux by somehow imagining themselves to be the every user, and constantly doing that annoying thing where they both say linux is powerful, and that the faults dont matter because the average user doesn't use any of said powerful features or they themselves, personally got used to the faults.