It's clear the bank is trying very hard to induce attrition by making everyone miserable through RTO mandates, insulting raises/bonuses, and taking every opportunity to make the daily experience of working for this company as awful as possible. They are doing everything they can to get people to quit.
On the flip side you have an overwhelming number of employees engaging in "quiet quitting" tactics and doing as little as possible, essentially daring the bank to let them go.
It's self-destructive for both sides.
How does this ever end or get better? Would a new CEO and BOD even be able to turn this around? I'm not so sure.