There is a movement, spotlighted by the decision to close Forge theory forums, which says that theory should always spring from actual play. There is a stronger form, too: All theory discussion should be in context of AP, being tied to a specific instance.
I tried writing useful AP posts. It didn’t work out well, for a few reasons. First: It feels like work. I don’t want to make my hobby work. Second: The reports have the tendency to degenerate into story hours. After writing that, I am too weary to write down anything insightful.
They do have a use: They help in remembering what actually happened in the game. A permanent record is always a good thing. It just is not worth the trouble, to me.
Hence, writing those posts will be rare. I may do it, when it feels useful. Not that often, I fear.