If you write an app that references that link, Apple will not approve it for the App Store (less of a requirement for Mac, than iOS).
I ran into this with Zoom. If you follow a Zoom conference link, it automatically starts downloading the Zoom client. I wrote an app that helps folks find Zoom meetings.
I was forced to add code that intercepts callouts to Safari, that access Zoom conferences, and show an alert, instead, asking the user to download the app.
