Windows 11 Enterprise?

Question

Windows

I decided today to upgrade to Windows 11, everything was as usual cleanly rolled up the system and went to the activation parameters (downloaded Windows 11 pro). And there, as I expected, it says that the system is not activated. This didn’t bother me much, since I still probably would have installed 10 again, but purely out of interest, I decided to try to activate the Windows 10 ltsc (corporate) key. And there was no limit to my surprise when I saw that the system was activated and it was written windows 11 corporate, although Microsoft said that they would not release this version soon?
And my only question is... How could I activate it!? And will there be any problems in the future in the form of bugs and other things.

UPD

Before that, I updated Windows 11 without losing data (updated from 10), I did this in order for Windows 11 to be activated (and it was activated) since I saw this method from some person on YouTube. Further, according to the method, it was necessary to cleanly install Windows 11, which I did, but after that I saw that the system was not active. Why was it so? After all, in theory everything should work?