Showing WHERE things are found when you do a search is not a "power-user" feature. It's an essential aspect of what the user is trying to accomplish.

The whole point is that secret hotkeys are design dereliction.

Is it, though? Most people don’t really have a notion of the file system, or hierarchical file structures. They drop files onto their desktop, or keep them in the downloads folder. Just ask a parent or your next-door neighbour.

That’s a bit of a problem when discussing problems of normal users with power users, because they don’t even realise how what they’re doing is actually not what normies do.

I’m inclined to agree that hotkeys in MacOS are hard to discover, but cluttering the interface with stuff many users simply do not need cannot be the correct answer.

If it's cluttering the interface, the interface design was incompetent to begin with.

That’s just ridiculously broad. You cannot cram an infinite amount of information into an interface, there is a maximum density for your design goal.