This has become sort of a mild internet classic thanks to its creepy, surreal nature, and I can see why some would be freaked out by it, but it doesn't really disturb me much. I mean, some of the masks are grotesque, but that's kind of it. Just weird looking masks. It's very gimmicky. However, it isn't really bad, there's definitely a unique and cryptic quality to the whole thing but it just doesn't intrigue me nearly as much as other "creepy" YouTube classics, the animations of David Firth for example. Firth often adds some kind of social commentary or sense of absurdist humor into his works, and a taste of these things is found in "I Am Your Grandma" but not enough for me to give it much praise. I will say that it's mildly interesting, pretty surrealistic, and was clearly made by a competent filmmaker with much potential.