Maybe unrelated to OP's question but I have always felt that it is impossible to get a job in AI/ML without a PhD in that field (by getting a job I mean do something new/useful and not just coding algorithm devised by other people). I studied mechatronics in university and fairly comfortable with math (calculus, linear algebra and stats), I have even written a small neural network back then to optimise parameters for lathe machining. But that's no where near enough for a job in AI/ML. Unlike writing a web page, which someone can learn within a week to produce something usable, I feel like you need years and years of studying to barely get a start in ML/AI and there is no hope for us non computer scientist at all.

[Added] Of course writing webpages pays well enough, but I still can't shake off this feeling that I am missing something by not jumping on the AI/ML train though.