I've got to call bullshit on that site. It comes up with a "likes porn" tag, claims porn downloads, and has a huge VPN ad at the top. That's seems like sketchy, fake, scareware tactics to me.
AFAIK trackers would randomly put IP addresses into the peer lists that they return, to provide plausible deniability for everyone[1]. If the site just grabs the peer list without validating them (ie. attempting a connection), that might be responsible for the false positives.