Compare Fischer's rise from scratch when he started going to a chess club.
Yes, I agree that Fischer's early ascent was incredible.
But the controversy directly relates to Niemann's rise after hitting 2500. His progress until then was relatively unremarkable. His progress after that point was ... unprecedented.
It's an unfortunate coincidence (for Niemann) that his sudden acceleration began almost immediately after he was caught cheating online ...
Compare Fischer's rise from scratch when he started going to a chess club.