Actually buying stock and not just options is brand new to that group, and they have nearly doubled in size since January so it seems to be going through serious transitions. Now they are doing what they can to put the thumb on the scale to squeeze hedge funds out of their GME positions. The crux of it is whether enough shorts have been made to make this possible and the rumor de jour is that hedge funds misreport their positions. Whether this is true or not, well if you look at WSB posts they’ll say it’s obviously true. I am not convinced personally.
To be clear, WSB to me appears to be doing absolutely nothing illegal or wrong to manipulate the market. The only coordinated effort is to buy GME and AMC and not sell the stock unless it seriously goes up in value (current posts think it’ll go to $10k-100k). They suspect hedge funds are performing ladder attacks to lower the price, so every time the price dips the advice is to buy more. I don’t see how simply buying stock at market price is market manipulation except that it does have an effect on the volume of a particular stock.