Earlier quoted context omitted.
I personally like the idea that my bank account has a completely different email and password then any other account. In theory, criminals don't know where to even try to exploit/phish.
Yes. BTW I still do that, but with a single address, username+myonlinebank@domain.com style. It was easier when I need to give them my email again on the phone or in other circumstances, they can see it's just the same with extra bits.
With a separate finance account, even if they figured out how to access my primary personal email. There is still an air gap with my financial accounts.