Are we talking 18-19 yr old teenagers? Because anything less and they shouldn't be able to have an account on their own. And of they do, then Robinhood would be sol. You can't enforce a contract on a minor. (although, interestingly, a minor can enforce a contract on an adult)
No. Age < 18 is considered a minor. Everyone on r/wsb calls each other autists and uses old 4chan slang like teenagers. I think some of the guys who caused Robinhood to change their system were minors.