One of the teams I oversee works exclusively with FS. Here's the gist from my POV.
It's hard to get fired from the bank. This leads to a downward spiral. Good developers are pushed out because they don't want to do the work of people who hide for a living. The hiders create a game with management that makes their job easier.
"We're all going to pretend this work is really complex and takes forever to do."
The longer you play this game, the less exposure you get to real challenges and skill growth. The cycle causes change in banking systems to be the slowest of any industry. This causes banks to be more than a decade behind everything else. This causes FS devs to be unable to catch up to modern best practices.
It's hard to get fired from the bank. This leads to a downward spiral. Good developers are pushed out because they don't want to do the work of people who hide for a living. The hiders create a game with management that makes their job easier.
"We're all going to pretend this work is really complex and takes forever to do."
The longer you play this game, the less exposure you get to real challenges and skill growth. The cycle causes change in banking systems to be the slowest of any industry. This causes banks to be more than a decade behind everything else. This causes FS devs to be unable to catch up to modern best practices.