I love it, and have been manually creating such links every day since discovering the feature. One should be able to link to any portion of a page, and now one can, largely. The highlighting ought to be something a browser allows a user to customize, but I really wish Firefox (which I use about half the time) had the feature.
In case that renders as a link by Hacker News, I've added a space here and removed the https part:
en.wikipedia.org/wiki/Olbers%27_paradox #:~:text=In%20astrophysics%20and%20physical%20cosmology,infinite%20and%20eternal%20static%20universe.
What it does is that it highlights that text in the page, with a yellow background color. Making the rest of the text difficult to read (your eyes are drawn to the very yellow highlighted part).