My point is that he doesn't know either. He complains that work dried up, but that might have been for a reason - maybe it's that casting directors have qualms

My point is that he doesn't know either. He complains that work dried up, but that might have been for a reason - maybe it's that casting directors have qualms about ex-child actors, maybe it's that those qualms were justified. The parent comment makes it sound like he was always good enough, and my comment is that we can't really know. Casting directors get a lot of flack all the time, because they have some real power, but they are professionals doing a job (and often they are not even the problem, as directors and producers also have a big say on any major role).