People see bitcoin/blockchain, don’t know the difference between the two, and realise other people have made lots of money on it. Same people see a new thing which also uses (or in their eyes, “is”) blockchain, and think this is going to be the new way to make money.
My belief is that no, it wouldn’t - because the posts don’t contain identifiable information about people. I’m not an expert, though, and I’d love for someone to come and correct me if I’m wrong.
Edit: I just saw that @S4nvers gave a more detailed answer than me a bit lower down, essentially agreeing with me but quoting the relevant part of GDPR to explain why.