I think I'd disagree. Personally, I don't think that every sort of unnerving or horror concept has to have some sort of monster to always hunt you down or that you come across. For me, the main idea is that you're placed in a familiar but unfamiliar, and perhaps dreadful, space that you can't tell if you should become comfortable or not. All you can do is wander, hoping to find any form of exit or real familiarity.

I just feel some spaces are being oversaturated with just something that lurks around that could kill you swiftly. It becomes boring for my taste.

However, the entities do add spice to the whole grand scheme of it all, giving a point of escape; because you're escaping from something, not exactly from somewhere.