(I work for Stripe.) That's correct. Stripe does not currently support recurring or repeated payments with Bitcoin. The receivers can only be used for a single payment.
In short, I'd like to see BIP70 become like PayPal's IPN, so it can notify websites of subscriptions, refunds, payment requests, instant payment confirmation from a trusted third party (Coinbase would be considered trusted to tell us a payments been instantly recieved without having to wait for confirmation), etc.
I've have these ideas for a while but I'm not known in the bitcoin space so my comments don't make any impact. Stripe could considering thinking about such specifications, I hope?