So what Biot said: go watch Moon and then come back and read this excellent blog post.
It's interesting, because I find more pleasure sometimes in rereading a book or watching a film again than the first time, specifically because of having a deeper understanding of it, the background to the characters, other films like it, and perhaps noticing things that were missed the first time round. Broader knowledge (from others or from previous experiences) actually helps further enjoyment in many cases, because it deepens your understanding when you are exposed. So I'd say go ahead and enjoy reading about things beforehand, you may well find it actually improves the experience - in some cases like James Joyce, or to a lesser extent Shakespeare, it becomes almost essential.
But regardless, you're missing the point. No one is complaining about the article containing spoilers or are trying to shut down the discussion; I think you must be reading too much connotation into the term "spoiler". What we're doing is providing the advice that people haven't seen the movie may wish to do so first, because it may be a lot more fun (I understand you may disagree, which is fine, but I stand by the advice). Your diatribe against "the cult of no-spoilers" is simply misplaced.
That's lovely for you. You are not me. You are basically doing this:
me: "I don't like artichokes."
you: "Oh, that can't be true! You must never have actually eaten artichokes! Surely you are laboring under a tragic and inexplicable delusion! Here, hold still while I stuff artichokes down your throat! You'll thank me later!"
Yes, thank you, I have had artichokes. I have never enjoyed a work of fiction more for having pivotal plot details spoiled, and I have often enjoyed it less. I am quite capable of evaluating my own reactions to things, thank you very much. You are not doing a public service by telling everybody to just be more like you.
I wouldn't 'stuff artichokes down your throat' as you put it and didn't properly discuss the film here because of the spoiler warning, but I don't want to be policed by other people in what I can say about a film, which is exactly what talking about spoilers does - it shuts down discussion and damages the discussion of everyone else.
If you don't want to read about a film before you see it, don't do that then, but don't attempt to police the thoughts of everyone else.
It's clearly an emotive topic, and I'm sad now this has taken over the top of the discussion of this film and don't think any of these comments including the OP deserve to be anywhere near the top (they were not when this thread started), so will leave it there.