Free speech is allowed.
Prosecuting people for free speech is impossible.
A bunch of imbeciles posting on forums is similar to a bunch of imbeciles on CNBC arguing that price is too high.
A hedge fund with 12 billion dollars shorting 140% of a stock and then using media to drive price to 0 is illegal. Also more then idiotic since they caused the whole problem to begin with. Without their greed there would be no short squeez, gamestop would have been at 50-60 or whatever fair market value instead of suppressed 5-6 dollars a long time ago.
The only illegal thing initially was hedge funds.
They then got punished and went to do other illegal things like wash sales, stopping people from buying, collusion with supposedly neutral market makers.
Whatever happens I hope the people above go broke first, investors that got conned go after their personal belongings for breaking fiduciary and afterwards spend a long time in jail.