>>96361109
Elves are popular, and often for very wrong reasons. You don't even need to like elves, or even know what an elf is, to jerk off to some big titted anime girl that just so happens to have pointy ears. So, the barrier to entry for engaging with the topic is extremely low.
The pornboards however are pretty slow and just imagedumps, at least here they can shitpost about sex with humans and elf-hate stuff to have some semblance of "discussion".