It does feel that many people here on lemmy are experiencing 1st hand of "feeding the troll". The Donald community created is probably done by less than a handful of people and it drove hundred times more amount of users to turn against each other.
This is why I frown upon the idea of defederation and I blame the users for opening that pandora's box. People, including mods, are too busy getting at each other throats and praising the value of their bubble communities rather than having any sort of planning.