forum standards for posting on very old threads

[Ichneumon]

Hi everyone,
I just listened to a story from 2010 and had some thoughts about it. This warning was on top of the comment window

Warning: this topic has not been posted in for at least 120 days.
Unless you're sure you want to reply, please consider starting a new topic.

Is it discouraged to post on old threads? Would it make sense to start a new thread?

[Fenrix]

Threadomancy is absolutely encouraged, particularly about stories.

Please do not start new topics for discussion of individual stories. 

[Ichneumon]

Thanks! Making new threads didn't seem like a good idea to me either. (would that be thread cloning as opposed to threadomancy?)