Critics always overanaylze movies like this. I'm sure it is funny, the Wayans rarely disappoint. Scary Movie series has been trash without the Wayans. Also look at this fact:
86% Audience
Audience >>>>>>>> Critics
Basically. The movie isn't deep or some shyt meant to be talked about years later. It's basically a "Hey y'all doing anything tonight? If not lets just hit the movies real quick and catch this."
No different than a typical night at the bar where you just drank beers and shot the shyt with a few homies and called it a night. You don't go home talking about last night as if it was the superbowl or something. It just was another night and in this case, another movie. We're not talking about a new Friday movie for crying out loud.