In the long-term, I can see a very real benefit to this. Credit card transaction fees are insanely expensive as they're typically charged at a percentage of the purchase. For instance, if I pay my rent online with a credit card, I am changed a $100 fee. If there was an easy way I could pay my rent with Eth, the transaction fee would be a lot lower. So I can see this working in the following way:

1) Stripe builds out the current functionality as a beta for accepting crypto payments.

2) Stripe lowers fees and expands the merchant base.

3) Stripe begins offering stable-coins on credit. Stripe is now Visa, but with way lower fees.