I believe Julian's past stuff (at least on Twitch) has been subscriber only for ages. He was slightly ahead of the curve there at least.
I can sort of understand what he means, but both him and DD say it in such a way that it sounds like the majority of their fans are made up of people telling them to kill themselves.
In reality, and what he kind of tried to explain, is that they had fans who would drop them upon learning they were gay or liberal or whatever. Which is normal because you can't please everyone and there's always gonna be retards out there. But the big thing being that they had more of these fans than most creators because they always downplayed the whole gay/liberal thing during eps, so they were a couple of "the good ones." At the same time, they themselves downplayed any sort of gay/liberal/political/whatever shit because they both know it's cancerous to make it a prominent part of your personality when you're sitting in a room playing games with your friends and making funny noises.
They're also amalgamating every fan they don't like to make it seem like "hatewatchers" are the majority. To most people, the following examples would be seen as separate people and not all of them would be hatewatchers - "I think faggot is a funny word" "Don't shove your homosexuality in my face" "I vote republican" "I've been stalking you since the timothytuba days" "Faggots and trannies like you should kill themselves" "You were funnier on oneyplays". To DD&J, these are all hate watchers.