I don't understand what these investors do, I don't think it makes sense for most of them and I would advice against it.

However, the whole point of Robinhood is to allow people to buy the stocks they want.

Would they also have stopped people buying Tesla a few years ago? This has proven to be right bet. However given r/teslainvestorsclub strongly pushing for the stock, could be interpreted as the same thing.

Robinhood seems to just decide who can be a winner.