I recently decided to re-install all of Windows completely to refresh to the latest version (my old installation seemed bogged down and for some reason full AMD graphics controls stopped working, despite repeated attempts to clean and reinstall the drivers).
Anyways, one of the first things I do on new installs is install Office 365. Guess what? I've decided to revert to by old Windows install because I found that OneNote 2016 is not part of a fresh Office 365 install. The experience with OneNote UWP, while I'm up to trying cutting-edge apps, has been severely lacking.
OneNote 2016, next to Excel, is the premier and staple app I use for all my work, both business and personal. I consider myself deeply dedicated, if not an expert, in the integral functions that OneNote 2016 currently provides to my Office integration, use and workflow. The route Microsoft has taken with this OneNote "enhancement" is defective and counterproductive. Sorry to see this direction in decision and implementation.