Nah but you're close IMO, the thing is people look at dead dumpsters like Gab and Parler and Bitchute, or before that shit like Zippcast or streamme and dlive and think "it's going to get big and then ban everyone who made it big because of government/media/ADL pressure".
Around the time Josh ran a fedi instance or started it with Crunk, he wrote an article mentioning Gab's #1 problem, it's an echo chamber and anything he said had a zero chance of reaching someone else.
I think the shutdown or attacked part is referencing 8chan (arguably also the hebe scandal where laurelai was caught in it), 9chan and the CP spam flood, and how many small sites wind up suffering.