Well, here's Jean Renoir in 1975 explaining why the older star wars movies are better, why stranger things doesn't give you that 80's movies feel but something artificial (actually I haven't seen that show yet, so I dunno if that's true), why instagram filters are so popular, etc.
https://www.youtube.com/watch?v=LKCrOLcDbjE Maybe technique doesn't explain everthing, but I feel this can be one basic reason why these attempts to make art replicating the feel of something older can have this plastic artificial feel to it. This summer I saw some old home movies made by my relatives around 1950-1970 or so, and boy these are beautiful. Not really because some old uncle was some great cinematographer (probably not), but somehow it's "easier" to make something beautiful/artistic with primitive technique than with a full HD 1080p 3D camera. I'm not sure how to explain what I am getting at here but one way to put it is that less precision is needed. Limitations can be liberating, something like painting needs a frame. I like this quote by John Cage: "Structure without life is dead; life without structure is unseen". However, artificially limiting yourself probably you might just become a boring hipster with a shitty old camera
Anyways,I wanted to say this because this comparison between old movie vs. remake movie always makes me think of this. In the end I find most remakes/homages/etc creatively useless (even if they are fun and entertaining, eg. new star wars), especially if the content and goal of the movie is just "same as the old one, but you know filmed with modern technique or dark/gritty or something"