I've been on this sub for 5 years and it has always been so that everytime the wsb hivemind finds a good deal it gets media attention and the number of clueless users/investors skyrockets. But people who stick around outside of these short periods under the spotlights know very well what they are doing despite the memes.
I don't believe in the theory that there are few people manipulating the entire sub for a pump and dump, rather the entire sub (the few tens of thousands regular active users) knew it was a pump and dump. That this story attracted the attention and money of thousands of clueless newbies is to be blamed on people that reported on it carelessly (medias, celebritites, etc.), not on the people who were doing their things on an internet forum expecting nothing out of it.