Youtube videos where the person expresses their opinions are not art, they're just videos of a person expressing their opinion. Call of Duty and other such video games are made by dozens if not hundreds of people, and not all of those people will have the same politics and it's unlikely most are able to insert their politics into the game. Big, mainstream games, like movies, are made to appeal to as large an audience as possible, therefore they will have or perpetuate the mainstream narrative and worldview.
A better example would be Papers, Please, a game made by a single person that takes place in a vaguely Eastern European, socialist-esque state and the game is a reflection of the designer's liberal view of (post-)Soviet countries.