I've been in OP's boat, mentoring people (normal hires, not from boot camps) who couldn't be bothered to put in the effort. It was a colossal time and energy sink.

My attitude today is that you have to put in the initial effort to demonstrate that whatever I invest in training you will be paid off by your future work using that training over and over again. Otherwise it's a wasted investment.

And that attitude is basically that of the old kung fu master: First prove that you are a worthy student, then I will spend time to teach you. Yet in a modern software dev environment, it somehow becomes snobby and elitist?

Edit: I've gotten the same criticism from elsewhere, so the the parent comment (which has since been flagged) is not unique.