I would like to say au contraire! Imo having someone say just look 2 pages back or the answer is on page 72, the third or fourth post is a misleading advice, since most of the paginated sites and forums will let the user customize how many posts per page are shown.
2 pages back @ 100 posts per page is totally not the same as 2 pages back when having 20.
I am 100% in favor of saying “post 6666” which can be interpreted as exactly/specifically that one post no matter what pagination or lack thereof is used. I have met this these stupid “situations” so many times (eg. on xda, snbforums, or ahk boards) and having in discourse only a single way to address the posts feels like a very big improvement.
The sidebar on the … side… helps with this navigation even more, as it’s so easy to search for the post i desire.
(i did give this advice, although maybe in a different form to multiple persons arguing that having infinite scroll is a stupid and bad idea, after asking them to look 2 a few pages back for something – i always use the highest number of posts per page, while most people don’t even know there’s a setting for that)