Everything not by bontintin belongs in another genus. 2 epis, and a hylocereus(or selenicereus, call it what you want, 1 had hair on the flowers, the other didn't)
I agree... Comes with using a common name that is used for too many different plants... people were likely told their plant was a night blooming cereus as that is used for some Epis so stopped at the first entry that showed up.