Same can be said "Why are you spending so much time praising a feature in a game you haven't even played" BUT no one does that, why? because it makes all of no sense. so why aren't people allowed to do same opposite?
Maybe I'm just skipping over posts, but I usually see people saying "Wow, this sounds awesome!" or "That dragon looked totally wicked in that video," if they're from Boston.
On the other hand, I hear a lot of "The game is broken now!", "The Elder Scrolls series is dead to me!" and "No spellcrafting means that this game is now a shadow of what it could be." Those aren't so much comments of speculation as ridiculous statements of opinion masquerading as facts.