Where does Rev tie into this? Well, he's pretty much developed the perfect breeding ground for this sort o
f "pedo support group." His videos all serve to give excuses to lolis and help fuel these "cognitive distortions" in their minds. People view these videos and agree with Rev's ideas. Then they go into the comments section and find a bunch of other people agreeing with him. It's the perfect excuse for them to keep watching lolishit; "Rev said it's okay! I'm not a pedophile! And look at the thousands of people who agree with him!"
What makes it worse is how blatant it all is. This isn't some underground pedophile ring, or a shady Telegram group; it's thousands of public videos for everyone to see, and it's all being pushed by someone with a sizable fan base, who is routinely cited as a trustworthy source by other content creators.
To be clear, I'm not trying to say that viewing lolicon is as bad as viewing actual CSAM. But I think it's important to understand that these people think in the same way. People will insist that lolicons are not pedophiles, but there are so many similarities that are impossible to ignore.
And for as much as Rev and the lolicons deny it, many CSAM viewers start with legal pornography, move to more extreme things like lolicon, then progress to real child pornography. It happens quite often:

Source:
"So why did you do it?": Explanations provided by Child Pornography Offenders


Source:
Does deviant pornography use follow a Guttman-like progression?