From earlier:
Again, if this is a look back at the beginning (through the prism of P.T.) then I wonder if the films they're looking backwards to aren't Romero's, but Hooper's.
What if Resident Evil VII decided to go back to basics, but those basics are rooted in Texas Chainsaw Massacre instead of Night of the Living Dead?
honestly classic RE takes more cues from aliens tonally than it does either of those movies but the things you listed are seem so superficial that they could be liberally applied to just about any horror game whatsoever to the point of where i feel like your comparison is pretty lost in general.
the demo is a pretty clear indicator of the tone they're communicating and it's most certainly in vein of the PT style atmospheric jumpscare stuff that takes tonal roots from more modern stuff like the paranormal activity series rather than classic horror movies. if you're wont in comparing it to old movies i'd even go as far to say that the tone shares more qualities with the blair witch project over any classic horror movie, as the first person and large focus on environmental detail is pretty key in that film vs. any classic 80s/early 90s horror stuff- much of that shlock horror that
all RE channels follows the bizarre camp and energy that those movies also generate
edit:
i feel like there's this strange assumption that RE was always a self-serious super terrifying game designed to frighten people in the same way that say, 'the exorcist' did when it has always been very much in that action-horroresque tone of the struggle for survival against an overwhelming force, whether that be one monster or one hundred. something more like 'terminator' or 'alien', with the protagonists having a high degree of competency and the liberty to take action into their own hands.
i attribute it to the marketing angle they took with the games given the slogan and all, but it's hard to say since it's such a prevalent thing. i really don't know where it comes from given the contents of the games themselves.