It's more that, if you watch a film and you start noticing dumb technical things then clearly the narrative of the film is not engaging you.
Also it was just a remark, it's not like bad greenscreen makes it a bad film.
It's a bad film because it doesn't make any sense, is way too long, and has awful generic dialogue between characters. The actors are the only thing holding it up and even some of them are not great. There's a reason Andy Garcia steals every single scene he's in, and that's because he is the only actor who understands the material hes been given and has some fun with it, the others look extremely bored. It is a dull, soulless timewaste.