Not at the moment, but I feel like if you are going for shortened links under the 
icon you would probably want to go all the way.
https://meta.discourse.org/t/possible-to-configure-shareable-hyperlinks-w-different-domain/80410?u=sam
Could be something like:
https://to.discourse/XyZb3
So the actual feature you would want is automatic integration of a custom link shortener.