I've frequently heard complaints that bittorrent folks using Tor put unhelpful strain on the network--is the distribution of this browser going to be a problem in that way?
Yes, the package as is will not route the bittorent traffic over tor, but since this is for people who don't even know how to use proxies, some of them will probably start configuring their torrent clients to use the same proxies.
If they don't even know how to use proxies, I somehow doubt they'd even consider fiddling about in their BitTorrent client's proxy settings. How would they even know what to put in there?
Checked out YouTube lately? Some content isn't bad, but there seems to be just as much noise that gives horrible advice and no one should waste their time watching.