And cycling became a punchline because of it. I think Magnus wants to avoid that fate for chess.

Understandable. There is just too much money and fame in sports - people are going to try to cheat. It is upto the governing bodies to reduce cheating to a minimum, if eliminating it completely isn’t practically feasible.

I agree with other comments here who suggested zero tolerance policy. Cheat once and get banned for life. I remember as a kid, watching hours of cricket. Then I found out some of my heroes were fixing matches. I stopped watching that day. No fan wants to see cheats and match fixers and other bad characters. That is what politics is for!