I'm using machine learning models daily (for non web-related projects) and have been doing so for quite some time now. So yes, it is possible to generate passive income using AI but the thing is, not "out of the box", and unless you have at least a few years coding experience and technical knowledge, likely nowhere near any big $ numbers.
For reference, my own small machine learning project pays for (more or less) the monthly rent. I did had to buy 2 extra PC's (machine learning tasks are quite CPU hungry), but since it's running on full auto-pilot and reached ROI after 4 months or so, it's passive income so I really can't complain.
"Use
[insert latest hyped keyword] and make
[insert $$$ here] in only one day..." = The perfect clickbait Youtube thumbnail
These videos popup during every new overhyped trend. AI is not some magical "thing" that generates revenue for you out of nothing. If it was, those Youtubers would be freakin' rich themselves, instead of being desperate for clicks.
Unlike what some like to believe, AI is exactly the opposite of "copy and pasting" some output from a web UI. Literally every moron can do this. Now do your math and it should give you an idea of the long-term value in that whole "get rich quick with AI" part.
Leverage AI by making it your own, according to your own custom needs and use it to improve your current products or speed up your work flow, build a model which solves a client's problem or anything like that, and offer the solution as a premium, automated service. Things like that, there's where the real value in AI is.
Bare in mind that it takes experience to build your own custom tools, having to come up with your own data set and database logic, tweaking the weights, speed vs quality control, and training your own models for your own goals. Then you still need to find a way to make software, different protocols and your local machines somehow all work together, or deal with random crashes. And again, have it work fully automated.
Basically, not something every moron can do... = value.