If AI were already the norm, and someone came along and said, "hey! I've got a great idea! Instead of AI building all this stuff, what if we did it by hand?" and talk about all these amazing benefits to hand crafting code, people would largely say no thanks.
As far as the abstraction argument goes, well, we've been creating higher order abstractions for a long time and called it good. I don't see why we should suddenly be against abstraction.