The answer is it depends. In that case i am pretty sure the main target was libraries authors and devtools authors.

But we can consider the users as operators. It depends of the use case. For a turbotax example, turbotax is here to give control of a fairly complex system (US taxes) to its operators (60 years old retiree). Now can the retiree learn about it if the optimizations are not enough? Probably not. Or maybe. That is a UX problem right?

But think of it. If it fails, who will the retiree call for helps? Experts operators. Hotline for turbotax or accountants. Can you provide them with that info?

I especially want to emphasize tools for your Customer Support staff. These are rarely prioritized, but they imho have a far better RoI and customer satisfaction impact than any UX change you can do. CS are operators.