What Stripe did is in line with the industry you are in, not the amount of refunds you might have emitted so far. I'm sure you'd get the same email if you were

What Stripe did is in line with the industry you are in, not the amount of refunds you might have emitted so far. I'm sure you'd get the same email if you were running a dating site, even if you had never had to refund anyone yet. Does it suck? Yes. But ultimately Stripe is just trying to run their business and a big reason why they get discounted transactions from credit card issuers is because they keep a portfolio of clients with low refund rates.