How would you define a "liquidity issue"? I would define it as "current liabilities in excess of current assets", using the accounting definitions of each. It's not clear that Robinhood was ever in that situation.
Not to defend the RH CEO, who I thought was very poor about communicating this, but I don't think that particular sentence was a lie.
If someone tells you to buy the Empire State Building and you refuse, do you have a liquidity issue?
They are refusing to do things to prevent liquidity issues. Their customers can send requests that cause them to temporarily take on more debt. There are particular orders that need a lot of money to execute. Block those orders and they don't need to borrow the money.
Not to defend the RH CEO, who I thought was very poor about communicating this, but I don't think that particular sentence was a lie.