Considering that Stripe was originally known for letting websites accept credit card payments without seeing your credit card number, one might assume that Stripe Identity only allows websites to see the verification result, and not your selfies and scans of your identity documents. That would be an incorrect assumption. Per https://support.stripe.com/questions/managing-your-id-verifi... customers of Stripe Identity…
This is true, but it's also kind of a misleading statement; the original selling point was that you could accept credit cards without having to deal with the requirements of PCI compliance and merchant accounts, which is done (partially) by you not ever seeing the card data.
If there was similar compliance regulation around document storage, I would assume that Stripe would use "Identity-Document-Standards" compliancy as a selling point. As far as I know, there are no such requirements.
I do think your #2 point though is exceptionally valid, and would hope that the majority of Stripe keys are scoped to not even provide access to this data/endpoints.
Edit: grammar