I have more than one bank. Work and personal and separation of risk. Of course they have a web interface but almost all of them also need their app for two factor authentication and authorization. The EU directive of about one year ago.

Only one of them lets me still use a hardware key but they won't replace it when it will run out of battery.

I wouldn't be surprised if OP had truly mandatory banking apps.

I use Revolut, which has no web interface.

My main bank does have a web interface, but because they've made a complete mess of implementing PSD2, they also require you to use their app on a non-rooted device to confirm any web login.

A lot of 'challenger banks' do not have a web interface, they're app only.