I have always wondered why a thread that is active with many replies (like the one about 'How To Make a Tarot Deck?') stays in it's original position and does not move to the top of the Queue where people would be aware of new posts/replies.
But then - looking at the one page of threads in the Tarot Forum - some of them at the bottom are two years old - which tells me this is not a very active forum.
When looking at the forum page with the posts, you can click on the column header 'Last Reply' to have the topics sort by the date of their last reply.
It's one extra click, but it gives you the ordering you are asking for.