The not needing to pay it well.

A well paid human expert can find lots of uses of LLMs. I'm still not convinced that humans will ever be totally replaced, and what work will look like is human experts using LLMs as another tool in the toolbox, just like how an engineer would have used a slide rule or mechanical calculator back in the day. The kind of work they're good at doesn't cover the full range of necessary engineering tasks, but they do open up new avenues. For instance, yesterday I was able to get the basic gist of three solutions for a pretty complex task in about an hour. The result of that was me seeing that two of them were unlikely to work for what I'm doing, so that now I can invest actual effort in the third solution.

Tools can make individuals and teams more effective. This is just as true for LLM-based tools as it was for traditional ones.

The question is not whether one (1) LLM can replace one (1) expert.

Rather, it is how much farther an expert can get through better tooling. In my experience, it can be pretty far indeed.