A fucked up thing is that people are being shunted into the "for you" recs on Twitter without their knowledge. So I've seen a number of folks with viral tweets asking, "Why am I suddenly getting all this attention and why are people mad at me?" and someone will eventually explain that their posts are getting served to users who don't follow them. One time the answer was basically, "I keep seeing your shitty tweets and I'm dunking on you because it annoys me," and the OP was like, "I don't know why?? I can't control that??" and only then did it occur to the person doing the dunking that this random stranger was not setting out to demand their attention.
This isn't an attempt to do a "the algorithm's out to get you" PSA, just an observation--random dogpiles are always a thing people have done on Twitter, and I don't have any evidence that this is happening on a wide scale.* But I've seen so many recent shitstorms across multiple communities that started with people who should know better jumping on a random Outrageous Opinion from an account with fewer than 100 followers without any obvious search keywords in their post, and somehow everyone in their immediate circle also saw it independently and got upset by it.
*Apart from my experience with social media users leading me to guess that way more people are using the "for you" tab as their home feed than the vocal dislike of it would suggest.