Actually I think those are great questions for a bank: liquidity crises still happen to banks and it's worse when other people's/user's money is also involved/entangled. Plus we are in an "exciting" era of "innovation" in banking where a bank's products aren't always as stable as you think or exactly what you think they are. If they are chasing "products" that aren't traditional accounts, that's important and useful to know. If they are chasing those and haven't any idea if they've made product-market fit, that's a good sign to run.
(I've had at least one interview with a bank that I didn't bother with any next steps for exactly these sorts of reasons.)
Not every engineering role is for a startup.