Just because it's strictly legal doesn't mean Stripe's banking partners or card networks will allow the transactions. In general, Stripe's prohibited businesses

Just because it's strictly legal doesn't mean Stripe's banking partners or card networks will allow the transactions. In general, Stripe's prohibited businesses list is generated from partner rules and not directly from the laws. As another example, note that Stripe prohibits transactions related to the adult entertainment industry. There's nothing illegal about that, it's just that Stripe's business partners don't want to take on the chargeback liability.