Never mind, there was actually an entry from +2 years ago with decent votes here,https://connect.mozilla.org/t5/ideas/copy-link-to-highlight/idi-p/16058Reading through the comments, I was able to find that a Desktop extension was already made for it,...
Unfortunate that there doesn't seem to be much interest from other users to vote this. I figured it'd also be fairly trivial for someone to implement this via an add-on, but unfortunately there have yet to be one made.
