The quality of most of these shorts is actually pretty good in terms of camera-work and cinematography. The quality of the acting ios decent too, mostly. There's really nothing to earn a low rating on those grounds. If these are representative of current Mexican cinema, they're actually pretty good exemplars to praise.
Now...the stories and approaches to horror...well, that's another issue. A couple of them weren't bad, primarily the 2nd one, set in a haunted hacienda. But somewhere along the line, Mexican horror filmmaking seems to have equated horror with disgusting and off-putting. And that's a huge problem. When you leave your audience more queasy than scared, you've failed at horror. There;s a reason the genre is called 'horror movies' rather than 'disgusting movies'. Your core audience might be somewhat jaded to gore, but that's not really the reason why (most of them) watch.
Just on filmmaking grounds alone, there's a lot of promise for Mexican cinema on display here. If these filmmakers manage to substitute real horror for excessive viscera, I'd certainly love to watch what they put out.
(Also, several of them drag out shots and scenes for far too long. But that's an easily correctable issue.)
