And here's, in my view, the crux of the issue. The poor fan whose belief is shattered.
What comes across is the embarrassment, and the anger at the embarrassment. The feeling you were 'made a fool of' - that someone, somewhere, is laughing at your gulliblity and naivite. and by god, we'll never let that happen again; even if we have to assume the worst of every possible rider.
It's the emotional equivalent of taking the brace position.
For me, personally, I won't do that. If a rider cons me, it's not because I'm some kind of gullible chump, it's because he's a cheating b"stard. And the guilt lies on him, not me. And in refusing to take on guilt or embarrassment that doesn't belong to me, it frees me to enjo the sport, and believe in certain riders. and if i'm wrong to, fine. I don't live and die by it - it's not a comment on me, but on the rider.
(and while we are on the subject, is that not what all the fanboi nonsense is at the end of the day - group sneering at the supposed naivite of others, because we are so mature, and so knowing, and we'll never be fooled again, no sir...)