I disagree, most apps are designed for the lowest common denominator, though they do a poor job of that.

Power users want settings and customizability to make their flows better, but those are not "beautiful" or are "distractions". See: the decline of evernote.

As a power user, I much prefer denser and more information rich UIs. Just tried Windows 11 for the first time today. The file browser's "detail" mode (which I'd consider the power user mode) has been destroyed by making it multi-line and adding a ton of padding, so now I can only see half has many files on a screen as before...