I guess it depends on the tracker. The only private tracker I ever used was actually for arcade and video game ROMs (PleasureDome), and they structured things so that their most popular torrents (MAME sets) were free to leech but contributed to the upload side of ratio (so you could download the entire thing for ‘free’, but that download didn’t count against your ratio requirement, and you could build ratio by seeding it). It generally worked - at least most of the time, but unless you had a seedbox, a VPN with port forwarding or exposed ports for BitTorrent, you weren’t likely to build up much ratio on other torrents.
I don’t use torrents much anymore (I’m pretty much in the Usenet camp these days), but I wouldn’t really do it seriously unless I paid for a seedbox.
He actually moderated jailbait? I always assumed he was the type of person to have an alt for it, but to actually use his real account? What a scumbag.