> Someone cheating sucks, but nobody deserves to be mobbed and totally ruined.

It's tragic that the cheater killed himself. But if marathon running is a "true meritocracy" where "performance is the true test", the public interest and outcry over violating the sport's core tenets is really not to blame, especially given a significant cheating problem.

> They are primarily cheating themselves.

This implies that there's nothing at stake for the non-cheaters, or that it's not important to them or the sport itself.