>>/997/
The loli stuff would fall into the category of "circumstantial evidence" and "extracting hyperbole" from that.
First of all, any honest person (at least somebody who has been on 4chan for any amount of time) would have to admit there is a huge difference between lolicon and actual pedophilia. Most people in the threads will just conflate the two, which is very disingenuous. Hentai is a very different realm from normal sexuality; people who are into vore don't want to be literally eaten by a woman for example. Not saying that there is absolutely never a link, just not necessarily.
Secondly, I believe Seth himself said that he had issues with a porn addiction in the past, and if we are being honest, a lot of us are probably familiar with that route. You start watching semi-normal porn and before too long, you crave ever more novel and outlandish stuff, - and all of a sudden you find yourself on /d/ or playing VNs like euphoria... Not that I would know about that haha