Haven't people done this before? Back in the 80's one of our "team" members (I use the term loosely) would reverse engineer the day's code every evening, rendering it unreadable to everyone else who created it.

Of course, nobody these days asks "why?"

If it ain't broke ...

Banks have tons of money (OPM!) and IMO, could rewrite legacy code, but

why?

So there is zero value add using AI for this. Quite the opposite given how error prone AI is.