And what kind of support do you think a Linux phone will have? While also having trash tier security. I don’t see that as an issue (for Americans at least since most banks here don’t use NFC/wallets in their apps), just use the web browser to access your bank.

Also GrapheneOS has in my experience decent banking app support outside of a handful of apps (including, ironically, my main bank which disabled GrapheneOS support a week or two ago). There is a maintained list of working apps that you can see for yourself: https://privsec.dev/posts/android/banking-applications-compa...