[Rupture Farms]

Can someone please tell me why "Thread Necromancy" seems to be frowned upon here? It sounds pretty stupid to me; if there's a good thread, but it's older than 30 days, it's "out of bounds"..

I replied to a thread that was apparently "2 years old", which of course, I was unaware of.
So, I got accused of "Thread Necromancy", even though I had actually bothered to write 5 paragraphs about the topic.

What is honestly the point of having that as a rule?
It's not as if I'm doing something wrong by replying to it.. if anything, I'm actually bringing back a topic for discussion.
Why on earth should it matter how old it is?