There's a time and place for minimalism, but the term "power user" also has a meaning: your accumulated user-base that didn't leave.
Windows post-Vista has forced me and countless others into never bothering again. The fact of a 90's MCSE certification means nothing when I blankly gaze at the visage of a "modern" Windows UI that tells me nothing of import. M$ basically told all their power users to go away.