I don't get why these films are being put in league with the Scary Movie series, Scary Movie 1-4 were actually funny.
The only similarities between them is that they are spoofs (although using spoof to describe date, epic, spartans and disaster is really stretching the word) and that 2 of the writers of the original scary movie wrote them (they didn't write any of the other Scary Movies). They're more like a bad spiritual continuation, they aren't official sequels to Scary Movies.
I do however worry that because of these awful, awful films and everyones assumptions that they are sequels, people will be put off of seeing Scary Movie 5 when it comes out.