Honestly, brigading is still a valid thing that can exist here, but yes, people don’t realize that if a post gets popular on a popular federated instance, people who appear like ‘foreigners’ (for lack of better word) will jump in and flood it. It looks as if a brigade, but it’s entirely organic, non-malicious, unorganized and unprompted.

I’m not sure how to classify things like ‘dunk tank’ posts, where someone on an instance will say ‘lol look how dumb this post over there is’… it’s not really calling a raid but many people will go to the source comment and dogpile them. And sure, that’s just part of being a public website, but it’s a bit easier with federation to go over and interact, just like it is moving between subreddits on reddit.