Oh yeah, and one last thing: It was my understanding that the way, for instance, Vast Error made money was by selling T-shirts with their fictional signs, but with no actual Homestuck material on them. So that's definitely still skirting the line and clearly implies that they weren't just able to print their trolls on stuff without getting on HS's bad side. Whether you choose to view that as a big nothingburger anyway is up to you.