I found a comment [1] from the author on a reddit thread [2]. So yes, it seems like the data is already stale and getting staler :(
[–]WedgeTalon 7 points 5 months ago
Interesting, but won't this be a pretty short-lived site since the Netflix API will be shut down November 14? Or are you doing this without using their API?
[–]n1te1337[S] 2 points 5 months ago*
It should work pass that date as the site doesn't rely on the API. I can't promise it though as at the end of the day they own the content no matter how you get it.