Yes, we're thinking of the same website.

I've been around on 4chan long enough to know that "troll" most often is equivalent to what the site really feels, or at least some of the people on there. The "troll" or "satire" label is only there to try to evoke plausible deniability - as in the case of "for legal purposes my call for violence against this person is a joke".

i.e. the sorts of people - in general - who browse the more unsavory parts of 4chan/8chan/etc are very fond of their dogwhistles.