Is your feature request related to a problem? Please describe.
Currently, the only way to get to know the discussion length for each post is to look at the post in the feed.
I usually don't pay attention to that, and even if I would, I would most likely forget that while reading some longer posts. When I reach the end of the article I would love to see how long the discussion is gonna be wit

Any place $scripturl is used should be converted to getUrl.

Test in different versions of the most popular browsers to ensure there aren't any bugs. File issues with the bug label if any bugs are found. This should include both mobile and PC browsers, including at least Android (Chrome), iPhone/iPad (Safari, Chrome), Mac (Safari), Windows (Chrome, Edge, Firefox), & Linux if there's any likely difference.