I’m convinced leadership at Apple are not power users. They’ve never put MacOS through their paces, or did any development themselves it seems. If they did they would have found all of the bugs and irregularities and huge performance problems themselves.
What do you mean by "largely the mindset they have"? I think the comment you're replying to is right, most Apple execs probably have jobs that can be done entirely on iPads, so none of the complaints by power users about macOS resonate at all (and this group is sadly far too small of a minority to have any financial impact).
Not this simple, unfortunately. Actually this is largely the mindset they have