We're running Win11 at work, no problems (except with old machines)
Users here had no problem - Win11 is really just Win10 with a more consistent interface and some new functionality. The only thing that threw some people is that the icons in the lower bar are centered rather than left justified, but that's easily toggled or you get used to it fairly quickly. Of course you still have to turn off search in the taskbar, turn off news, turn off weather, turn off Windows Search Indexer, etc... but those are Win10 problems too, and nothing group policy can't smack down. We had one guy who was running Start10 on Win10 so now he's running Start11 on Win11. All in all it's no worse than running Win10 for bugs.
The problem, as TFA mentions, is that we've got several machines that can't run Win11 - they could probably be coerced into it, but that would be bad from a support perspective. So they'll be on Win10 till they die or get replaced. But that's not really a big deal because Win10 and Win11 really aren't all that different - WIn11 is more Win10.1. Unlike 98/2000 -> XP, XP -> Vista, Vista -> 7, 7 -> 8, 8 -> 10 which were huge changes.
So anyhow, the sky is not falling.