A non trivial amount of on boarding is because "this is the most efficient information to ensure these learning agents have as they navigate their environment seeking rewards"

I don’t believe in hazing. I am paying them to learn something that I believe will make them more productive for my business in the long run and likely help them in their career when they leave as well. They can still use their favorite other editor if they want, but they should be able to teach vim and emacs to the new programmers I hire after them. Also if they can’t learn emacs, I have less faith they can learn other useful things also when needed.

In the early nineties, when we were coding on Sun Sparcstations, the only real options were vi and emacs. I'd tell new college grads to use vi. After a few weeks I'd tell them about the existence of emacs.

Some would switch, most never did.

Nobody was forced to use an editor against their will, but before ubiquitous Linux availability in college, it's not as if they had any practical Unix experience.