Dial down the snark, it's making you overreach; discussion thread means discussion of any and all content of which the thread was created for, and episode previews (I still can't believe this) are part of that content.
Even though you flatter me by mirroring my sentence usage, please don't put words in my mouth. I've never said a preview has to be discussed, just that it's insane to not want it to; you don't have the right to not know, only the right to not participate.It's insanely irrational and egotistical to insist that, in an discussion about things that happened in the current episode, that the preview(which is a collection of things that happen in the NEXT episode) has to be discussed as well.
Nobody had called you fucking stupid either, all this irrational discussion has got you hallucinating.