I would say it is due to the freshness of the system. I used Windows 11 for 2 weeks at a friends house, though it was modded a bit with ThisIsWin11 so no bloatware and the UI was changed at some places from what I gathered.

Otherwise it was lovely, more Mac-like, games did not suffer in any way shape or form from it, basic settings (settings used by the typical users) was easy to find however when time came to minor troubleshooting the problems arose. Mainly no reliable ways to solve more obscure problems due to the fact how new it is. We were struggling with a docker setup, found the solution, but it took way more trial and error than usual.

So in conclusion I think the negative feedback comes mostly because it is still new, thus harder to maintain, troubleshoot and repair than win 10, but this will fade eventually as it gets move widely used. The same stuff went down after XP and even 7