[jadbox]

Not sure what gov require, but most credit unions do not use such lockdowns

[matheusmoreira]

They will.

[JoshTriplett]

Credit unions, at least in theory, are known for caring more about their customers. It'd be worth explicitly giving them the feedback that you use them via their website or via an app that works on an Open Source phone, and telling them that that's one reason you're a customer.