Apparently Disqus has removed their comment sections from pirate sites (anime, manhwa, FitGirl Repacks, etc)

Something I don't get is, why does Disqus care so much about the legality of contents hosted in websites that use Disqus? It's not like they hosted the pirated contents in the comment section itself, what's Disqus's business with them?
It has the same energy as Visa Japan blocking transactions for adult content which is none of their business too.

Pic 3 from Reaper Scans websites.

Also, does anybody know what comment section does FitGirl and Dodi Repacks use? They seem to be from the exact same brand, but I can't find any hint of it.