Depending on what your bank's app actually does, that might not be a big problem.

If it is, there's a good chance LineageOS with root and Play Integrity Fix will work, at least it's been working for me for years.

I mentioned this yesterday on the Google only allowing verified developers story, but my banking app works fine on GrapheneOS, as do many others. There is a crowd sourced list of their status here: https://privsec.dev/posts/android/banking-applications-compa...

Then get another bank. Or better yet, don't bank on a phone.

True. The problem is most Android smartphones don't allow re-locking the bootloader using a custom key, so you can have a locked bootloader with a de-googled operating system.

Ironically, Google Pixel smartphones do

More demand would help ^^