You are
definitely working at a different bank than I was... Mine had an entire division focused just on internal technology and tooling. Which was actually a bit of a nightmare, because it led to things like building our own cloud with customized versions of off-the-shelf software. Because of course if you ask the internal technology group whether we should build a cloud or buy a cloud, what do you think the answer will be? And of course the publicly-available version is not good enough for our super special needs, so we'll customize it and just ignore the fact that we are now either (a) on a treadmill to keep up with upstream or (b) more likely just ignoring upstream. My company chose b, until eventually years later they realized that those super-special needs weren't so special and had a huge uplift project to get to the publically-available version.
Anyway, the group I worked in was an acquisition with a completely different tech stack. So we were basically completely ignored except for the occasional saber rattling that we should be moving to blessed tech stack. After which we would say, sure give us a project with time and budget reserved and we'll get right on that. Cue the crickets. Also, my group was PCI burdened, so we quickly became exempt from any of the afore-mentioned cloud stuff, because they were afraid we would make the cloud in scope for PCI.
Now, most of the people who I knew were decent have left. But it wasn't about the technology -- the paycheck is enough to get through that. It's mostly around back-to-office mandates. Which is a strange stance, after the company spent who-knows-how-much moving all our machines to be virtual desktops that we could log into from anywhere.