> I'm increasingly coming to the view that there is a big split among "software developers" and AI is exacerbating it

This is admittedly low effort but the vast majority of devs are paid wages to "write CRUD, git push and magic" their way to the end of the month. The company does not afford them the time and privilege of sitting down and analyzing the code with a fine comb. An abstraction that works is good enough.

The seasoned seniors get paid much more and afforded leeway to care about what is happening in the stack, since they are largely responsible for keeping things running. I'm just pointing out it might merely be a function of economics.