XP is maybe the purest example of the basic problem. If you're good enough to actually practice XP, you don't need a methodology at all. You'll do the right thing in each situation. Methodologies are for those who aren't good enough. And apparently they always find a way to pervert it into its opposite, because people never get tired of exerting power and maintaining an illusion of control.

Yes, if everyone is good you don't need processes.

I do think Scrum took off because it is the opposite of XP, it doesn't tell developers any development practices (Pair programming etc.) so developers didn't feel bullied and said "Yeah, ok, lets do your Scrum". But it backfired.