About Shortcuts vs Sync, doesn’t the OneDrive app/service still have to process and look for changes across the whole location you are using as a shortcut or sync? 

While I would like to set up a shortcut from the Library level, it feels like the OneDrive sync client is very busy checking every file in the whole library I sync, each time my computer starts up.

I feel like I should do my part to save a thousand silicon trees and only create shortcuts to the folders I use within a library, reducing all that processing power.