It takes most people years of burying their heads in a computer to become effective programmers of anything more than trivial software. This is rapidly changing.

That hasn't changed at all. You simply cannot be an effective programmer using AI. Heck, if you're having the thing write programs for you then you aren't a programmer at all at that point, because programming is the act of writing code. But you can't make good software if you just have the LLM bang it out for you, so nothing has changed.

Obviously the knowledge gap required to go from zero to doing something useful has shrunk substantially. That is improved accessibility.