There's still plenty of steps that your bank app can (and will) take to verify this is as intended. Requiring the user to "parse" the URI is not scalable anyway, the app needs to present the information clearly (i.e. "Do you really want to transfer 123.45€ to IBAN abcd, you have not transferred money to this IBAN before, the IBAN indicates a bank in <country>" where the money amount is clearly highlighted).