Just to clarify this was an intentional choice not due to a lack of talent, as many of the jokes in this movie rely on that cheap amateur feel to deliver their setup and payoff. This movie and it's particular style of silly self aware humor simply would not work in a well polished more typical quality movie production.
I totally agree with you in most cases, but by many accounts this is a funny movie on purpose rather than finding humor in its unintentional blunders trying to be something else, so it's only really a "bad movie" in aesthetic. In this case, the veneer of a bad movie is just another tool for making the jokes and a stylistic choice rather than an overall descriptor of any lacking quality in the writing, performance, or technical aspects. Based on that understanding, I would say they actually made a pretty good movie by achieving what they actually set out to make and the movie's audience enjoying it for its intended purpose.
Nah the opening scene is legitimately funny. The dude’s parents get killed in a car bomb. And instead of showing a car exploding, they just have the text “VFX: Car on fire” where the car used to be. It’s definitely framed as a comedy right from the start.
Get blazed with some friends before watching it, or turn it into a drinking game. You’ll have a great time. It’s definitely self-aware of how campy it is.