More industry insight: walls of phones like this is how company's like Plaid operate for connecting to banks that don't have APIs.

Plaid is the backend for a lot of customer to buisness financial services, including H&R Block, Affirm, Robinhood, Coinbase, and a whole bunch more

Edit: just confirmed, they did this to pass rate limiting, not due to lack of API access. They also stopped 1-2 years ago