Twitter and 4Chan are generally for bareknuckle flamewars, and low-effort shitposts. In short, they're the least useful elements of the fringe, and their producers are easy to find because half their fun comes from ignoring bans, and pseudononymously transgressing social norms.

The content that is constantly forced to move is dialogue, and ideological exchange. The useful stuff. If you want to follow those discussions, you have to pay constant attention, and be prepared to run through social media accounts and platforms like tissue platform, or socially engineer yourself into multiple encrypted chats.