Fischer might never have been the world champ if it were not for Pal Benko.
Pal Benko opened the door, and Fischer blasted through the Russian state-sponsored-chess-mafia with a record that (most likely) will never be equaled.
It's sad he was mentally ill. He deserves some empathy, and some (well deserved) criticism, as well. But we are all imperfect beings.
https://en.wikipedia.org/wiki/Comparison_of_top_chess_players_throughout_history
What a joke!
Wiki is indeed a joke. For lazy people who can't think for themselves Wiki is a great source for the common man's prejudices, and little else.
Wiki is also in bed with Google, to keep your eyeballs glued to their ecosystem.
Get over it, if you can. You'll be a better man for it.