I can only speak for myself. I have two Dell computers, a brand new desktop that came with Windows 11 Pro already installed and a laptop that I updated Windows 10 Pro to Windows 11 Pro. I haven't had any problems so far.
I have been using the Desktop for a couple of weeks now and the Laptop has had Windows 11 Pro on it for around 11 days.
I have Microsoft 365 and have used Word and Excel several times, no problems. I have played games on my desktop, some new, some old without any problems. I have looked and tried out many different things without problems.
The snipping tool may have an issue but there is a way to correct that. If the tool doesn't work right look at this topic. Snipping tool not working after upgrade to Windows 11 - Microsoft Community