Stripe is a shitty company. They openly discriminate against LGBT-oriented businesses by describing such businesses as "adult services" and withdrawing service. A favourite hangout almost had to close its doors recently due to this crap.
Porn is legal, and should not be discriminated against, but that's beside the point. The business in question was providing 100% legal services for adults, but nothing to do with either porn or prostitution.
Are you saying it is ok to discriminate against a business just because their services are oriented towards adults and not children? If that is the case, then Stripe should also discriminate against "straight" bars and pubs, which is not the case.