Does it collect your bank username and password, or work directly with banking APIs? Every time I see some service trying to do this via Plaid I cringe.
You log into your bank directly and then grant access to Stripe.
I presume, behind the scenes, your bank gives Stripe a single application token (not your credentials) to pull read-only data.
(edit) But this is only for banks supporting Oauth, it seems for others it DOES give Stripe your credentials.