Besides Stripe apparently isn't purely free and open (ie, not holding strong values outside of the purely commercial marketplace) to everyone, when they are declined services to Gab.ai unless they stop 'serving adult content' which is lawyer speak to attack them for allowing unsavoury people to exercise free speech. As bad as some Gab users are I don't think it's the payment processors place to enforce some terms of service or speech policy on their customers. As long as Gab deletes illegal content (which they claim they do) then I dont see why they shouldnt be allowed to run a service with a legitimate free speech policy.
You can't really put this on stripe, a big part of how good their product is is that they hammered out contracts with everyone who provides debit/credit card services. Those some companies have been blocking payments to the sex industry for years, as well as other groups they consider unsavory (recall Visa blocked donations to wikileaks). The financial institutions involved did not give up that clout when they signed on with stripe.
You can't really put this on stripe, a big part of how good their product is is that they hammered out contracts with everyone who provides debit/credit card services. Those some companies have been blocking payments to the sex industry for years, as well as other groups they consider unsavory (recall Visa blocked donations to wikileaks). The financial institutions involved did not give up that clout when they signed on with stripe.