It seems that, at least anecdotally, a lot of people still haven’t seen Bird Box or know anybody who has, which has made some cry foul, but it seems that, whatever way you look at the numbers, a lot of people did, in fact, see the film. It’s possible that some watched simply to understand the memes that were going around, but at the end of the day, the reason doesn’t really matter.
Article source: https://www.cinemablend.com/news/2464739/looks-like-nielsen-is-backing-up-netflixs-bird-box-numbers