(Havent watched the video. )What if the lie is that a feature or mechanic are not in the game, and they want to play off your expectations? Is that ok?
Lying is bad.
Even slightly different mechanics can turn me off of a game at times.
For example, turn based RPG has tons of different ways of being done. Some of these ways I definitely prefer over others.
If you have to lie to get me to buy your game, then I don't want your game.