However they are plenty of others who’ve had performance issues, SSD issues, audio issues, networking issues, terrible memory management, abysmal battery life and so on.
All because MA screwed various things up during the process. I am told this comes from MA not receiving much love, while the parts it works with are changed almost yearly.
The issues I had were numerous when I uograded, some were known to Apple Care, others were new (at least to the agent).
Clean install and slow migration solved all the issues that MA created, didn’t fix bugs in the macOS however.