That's exactly the sort of thing that is fine with me. Bit torrent isn't http traffic. Comcast also blocks port 25... It's their network, and I simply go around it anyway.
If Comcast does end up blocking torrents on their network, perhaps my connection will be faster and/or cheaper for it. Torrent fans can go to another provider, it's called choice.
This isn't a case of favoring one website over another, it's about blocking non-http traffic vs a totally open network. If they blocked youtube, then I'd be looking for another provider, but they're not going to do that.