I really like Clean Code and agreed with a lot of the points it makes. I would be lying if I said Bob Martin hasn't made me a better programmer. And I can can empathize with what he's saying about not liking public speaking anymore.

Despite this, part of me wonders if the reason to pick now as to time to stop doesn't have something to do with the criticism- valid or otherwise- he's now receiving. Some of his Clean Code videos have some pretty offensive stereotypes which have been pointed out. Some of his loud political views have been criticized. People are saying they won't share a stage with him.

People always have reasons to quit but the precise moment they choose to quit often tells the story of why they're really quitting.