I remember this topic coming up at work and I said something along the lines of why would anyone provide their online bank account credentials to another servic

I remember this topic coming up at work and I said something along the lines of why would anyone provide their online bank account credentials to another service in order for them to verify your account and other members of my team (all software developers and operations) didn't see a problem with it. It seems like there's a significant disconnect between what people believe is good security practice.