Yeah, it's odd that the symbol appears on the truck given the subject of this episode. It's ostensibly against CP but gives the coffeeshop/CP site owner some sympathy as being just strange. Also he's an empathetic caring person when he hears the hacker's father died.

I think this video and the truck symbol would be great for pizzagatewhatever (askpizzagate that the mods suggested is even more of a dead forum).

This is an investigative sub. The post essentially said, "look, pedo symbol in a TV show". Had it been able to say something like "look, pedo symbol in a TV show, and the creator is connected to someone we already know in such and such way" instead, that would be investigative content. As long as that's not the case, it doesn't add substantial value to the investigation, and is speculative. That's what other subs in the subverse network are for, to discuss things that don't immediately add to the investigation, so that eventually a proper lead can be sourced from those discussions and posted on the main sub.