I can't tell what the contradiction is.

I am a Mac user but I largely use the Google suite web apps, which I guess is the polar opposite of being a "power user".

What's contradictory however about someone using Mail or Calendar and being a power user? Is there a world of productivity apps that are much better designed than those? Or is anything below "I do everything in emacs" not a power user?

Saludos.

The Google web suite apps work quite well, in contrast to the Calendar app which I've never managed to get working.

I think the argument is more "How can a power user survive with something so flagrantly non-functional?"