Centralized platforms are also prone to the same kind of attacks. Kiwifarms and especially its users’ offshoot Discord and Matrix chatrooms are good example for this. Hell, even 4chan was infamous for organizing troll campaigns, first just “4 teh lulz”, then people turned the site into their personal army.
But then everything changed when the fire alarm community attacked.
Only the avatar can master all the alarm types, but when the wold needed him the most, he vanished. Years later he returned, and I believe he can finally save the world.