Site can in fact limit how many peers you are allowed to connect to as Anon said. Most don't however. There are quite a few that will only give you 50 per scrape. Also the torrent client itself can limit how many you get if you check your settings.torrents.ru - their torrents have 6-7k peers each of them, if you download, they will not allow you to get inside 4-7k peers at once, they will allow you to reach maximum to 50-60 peers first, they are doing this for anti piracy companies not to trace all swarm.
Learn some C++ coding and MySQL also![]()
I doubt limiting would have anything to do with anti-piracy. If they were worried about anti-piracy they would close open signups and mass advertising the site first imho.