Why is Windows 11 activation so controversial?

After upgrading to Windows 11, I unexpectedly ran into an issue where the system was no longer considered activated. I hadn’t had problems like this before, so at first it really threw me off. I started reading forums, comparing other people’s experiences, and noticed that everyone seems to have their own way of solving it — from simple checks to rather questionable options. It made me want to discuss why this topic still causes so many questions and disagreements.