WTF, snow is scary dude, trust me. I've seen it up close.
I get what you're saying about LTROI, it felt like some artsy pretentious take on a monster genre. But at the same time you cannot just throw a dude under the bridge just cause he attempts something different with a monster genre. The slow paste was a way to make it more realistic and they showed the landscape to capture the time and place of this story. To me it felt really like the 70s, for example. There are also plenty of gore in it like when the "dad" fall out of the window or when he kills guys to suck their blood for his "daughter". In many ways, it's more like a serial killer flick.
Where I see the flaws is that it felt limited, like maybe it should have been a short story(?). It had the potential for a great movie there but it was an undeveloped idea in many ways. The director concentrated too much on form but didn't go all way out to bring the viewer in and make it very scary. But I understand why some may love it cause it's a great idea.