IIRC, Zack Hample was on Conan O' Brien a few years back and he did come off really douchey when he explained some of his tactics for getting as many foul balls as possible. It didn't help that Conan basically used him as foil for his shtick and kept making jokes about how pathetic he is. I think that impression has stuck with a lot of people. The important milestones balls may be coveted by a lot of people but a random ball thrown into the stands only interests little kids and him fighting them off so that he can assemble his massive collection does come off douchey and kind of pathetic. That being said it sounds like from what some people are saying ITT that he's committed quite a few acts of generosity. Maybe he's been doing that all along and Conan didn't emphasize that or maybe he realized that how poorly he came off on tv and this is a recent development. In any case, good on him. He's clearly not so all consumed by his hobby that he can't learn to share with others.