I'm not familiar with the comments made by Tom that you're referring to.. But I think I understand.
I feel producing all original content is much more gratifying then using legally sensitive material. The main plus about using music produced by someone within the community is that you're giving them amazing exposure they otherwise might not have recieved. There's really no excuse for using copyright music anymore. There are more then enough talented musicians within the Newgrounds community who are more then willing to get involved with projects.
As for "sprite movies", I'm not keen on them. But there's great pixel tool addons for flash now, so there's no excuse for not creating your own content from scratch.
Just my 2 cents.
ImpendingRiot
Anyone in an uproar over Tom's recent comments probably haven't contributed anything of significance to Newgrounds