IMO teachability/curiosity is ultimately orthogonal to the more base question of money-motivation.
In a previous role I was a principal IC trying to mentor someone who had somehow been promoted up to senior but was still regularly turning in code for review that I wouldn't have expected from an intern— it was an exhausting, mind-numbing process trying to develop some sense of engineering taste in this person, and all of this was before LLMs. This person was definitely not just there for the money; they really looked up to the top-level engineers at our org and aspired to be be there, but everything just came across as extremely shallow, like engineering cosplay: every design review or bit of feedback was soundbites from a how-to-code TED talk or something. Lots of regurgitated phrases about writing code to be "maintainable" or "elegant" but no in-the-bones feeling about what any of that actually meant.
Anyway, I think a person like this is probably maximally susceptible to the fawning ego-strokes that an AI companion delivers alongside its suggestions; I think I ultimately fear that combination more than I fear a straight up mercenary for whom it's a clear transaction of money -> code.
I had one fairly-junior teammate at Google (had been promoted once) who was a competent engineer but just refused to make any choices about what to work on. I was his TL and I gave him a choice of 3 different parts of the system to work on, and I was planning to be building the other two. He got his work done adequately, but his lack of interest / curiosity meant that he never really got to know how the rest of the system operated, and got frustrated when he didn't advance further in his career.
Very odd. It was like he only had ever worked on school projects assigned to him, and had no actual interest in exploring the problems we were working on.