Yeah, you're saying he's acting like he's greater than what he is (or acting in one way, while having a documented history of being something other than what he's shown in regards to Death Stranding). So, what would have made the trailer better for you?
No, not even that. In media, when the word pretentious is used, it's almost always a way of saying that the creators of the media are trying to give off a greater importance of said media than there really is. In this instance, we're just talking about a trailer. Personally, I don't care how great Kojima considers himself to be : P . Especially because he's earned his reputation as a media genius.
I think something a bit more coherent would have been great. Yes it's fun to speculate and fan theories are one of the best things about anticipating Kojima games, but it would be nice to at least know *some* of what's going on. A little bit of clarification might have been added but very little at all. I would have liked to see more genuine gameplay. I'm sure walking will be very much part of the gaming experience(lol), but I have a feeling there is a lot of depth that hasn't even been teased.
Keep in mind none of this would be a problem if this wasn't the 3rd or 4th time...