What exactly looks so bad about this trailer
It's CGI, maybe a bit live footage, IDK not sure cause of the quality
But how can you presume this game is crap based on a 30 second trailer with no gameplay
What is the game marketing too? What idea does this trailer without game footage is telling you?
If I told you this game was an entirely different game, would you believe me?
The game's marketing is going for that edgy, we know what teens think and like mindset. It shows clearly that they think this edgy hipster hacker is an actual thing and that modern teen/young adult culture are interested in it because of what? Market research?
It's not that the marketing didn't hit the right market or they could had done something differently. It's that their trying to be "cool" or that they understand what younger people think, like, or want. Trying to market a game that is edgy and dangerous to catch a large interest, which it by itself is uninteresting and tells us that this game is most likely not good because they're resorting to such tactics.
But the fact that the game itself is going for that image itself creates a even larger distaste that they think to make this franchise successful is to make the characters seem edgy and cool. Think The Simpsons and Poochy, a cash out character that was made to be "cool" to relate to current audiences when in actuality the character was terrible and unrelated to it's audience having the show quickly scrapping the character because it risked the show's brand image and quality.
If the game company really wanted to go this route for young tech hackers story they should read up on books like Little Brother by Cory Doctorow. We want a human/realistic approach to these sorts of things, not some glamor shots of how cool something is in some very unrealistic fashion.
edit: relevant again: