The only communication I saw from Robinhood is that they had to stop trading due to volatility. I think people jumped to the conclusion that it was them trying to act in their users interests.
The volatility was going on for days, yet they said nothing. They programmed their platform to block trading in advance, yet gave no prior announcement or warning.
A well-known investor with integrity publicly mentioned personal issues with the co-founders' integrity in the past.
