Listened to the part where Cameron talks about Stoner's unhappiness with CRTs. I guess they're alike in having their heads in the sand about financial realities. Fine, CRTs suck compared to factory bikes, but 12-bike grids suck even more, which Cameron didn't bother to mention would have been the consequences of not having CRTs.
Anyway, Stoner's reasons for retiring never made much sense. Probably the simplest explanation is the best: he burned out mentally.