probably because they don’t like the real life crusaders, who did do a lot of messed up stuff like the massacre of Jerusalem during the First Crusade and the sack of Constantinople during the disastrous Fourth Crusade. To be fair, the Crusades were originally a defensive counterattack against Islamic invasions of Spain and Anatolia, but there’s no excuse for the atrocities that were committed
on the other hand they might also be degenerate p**n posters who don’t like being told that they’re violation the site Terms of Service