Pretty much my opinion on this.
We still don't know nothing about that misterious mode in the main menu. What if it turns out to be just a mediocre/bad mode? Would people still claiming that is a GOTY?
-_-
I think this is what OP is talking about. This and the fact that so many people are saying let the game come out first.
Clearly that is what needs to happen, but when people make claims about Red Dead taking GotY no one bats an eye about it, let alone saying something like "wait for it to come out first".
Actually Uncharted 4 was the overall winner in 2016 by a lot.
Why do people put so much emphasis on which game of the year is the best?
Pretty much
If you follow VGA
But like The Last of Us in 2013, Uncharted 4 won the most GOTY awards this year (159 vs 98 for Overwatch)
https://gameranx.com/updates/id/95169/article/uncharted-4-wins-the-most-goty-awards-for-2016/