More like “why the fuck would I walk all the way across the city now that I own a car”
That's a bad analogy.
Using an LLM for coding gives you an initial speed up with the trade off being skill atrophy, and a build up of cognitive debt in the project.
A better analogy would be the Greek government before their national debt crisis. It would have been better to invest in themselves, not lie about their own finances, and not kick the can down the road. But they kept lying and kicking the can down the road because it was easier in the short term. Of course, we all know how that turned out in the end.