I read in Parents magazine (why I get Parents, I don't know...) that children watching TV leads to having ADD because they're over stimulated, so I would think that if they had that many toys to play with, it would be as detrimental. Once they get to school and are only allowed what's on their desk or whatever, they could have a hard time adjusting.
Regardless, I don't know why anyone would tell you it's wrong for you to get rid of some of your son's toys. I can't even imagine what their reasoning could be. It's not as if you're pulling his favorite toys out of his hands, and he obviously doesn't care that toys he never plays with are being taken away--which, by the way, I think is great! I've known kids who would throw a fit if you took an old, ratty toy that they never played with away simply because it's theirs. (And no, there was no sentimental reason, just, "It's mine!!!")
Regardless, I don't know why anyone would tell you it's wrong for you to get rid of some of your son's toys. I can't even imagine what their reasoning could be. It's not as if you're pulling his favorite toys out of his hands, and he obviously doesn't care that toys he never plays with are being taken away--which, by the way, I think is great! I've known kids who would throw a fit if you took an old, ratty toy that they never played with away simply because it's theirs. (And no, there was no sentimental reason, just, "It's mine!!!")