This spoils some stuff from Night 5, so if you don't want to know - go away!Some stuff from the
Phone Guy page on the wiki, which may just be an easter egg, but could be some kind of explanation.
Scott said:
"Haunted" being stated in a 'quote, unquote' manner, meaning that it likely isn't the explanation. But the "they view you as not being in costume" theory is shut down by many people because that isn't looking that deep, not "careful observation" due to it clearly being stated by the phone guy. This theory definitely would be.
The phone guy's message on night 5 doesn't contain any speech from him, just some random noise. When it's reversed and put through some post-processing, it makes a barely-comprehensible garble.
The wiki showcases the theory that the garbles are an excerpt from the book "Autobiography of a Yogi". It shows this excerpt with parts from the book that they believe were cut out by silence/random noise.
"(Omitted: Sir,) it is lamentable that mass agricultural development is (omitted: not) speeded by fuller use of your marvelous mechanisms. Would it not be easily possible to employ some of them in quick laboratory experiments to indicate the influence of various types of fertilizers on plant growth?
You are right. Countless uses (omitted: of Bose instruments) will be made by future gener- (omitted: ations. The scientist) seldom knows contemporaneous (omitted: reward; it is enough to possess) the joy of creative (omitted: service.)"The wiki states:"The quotation from Autobiography of a Yogi on Night 5 is from a chapter in which Yogananda posits that
metal has a life force. It is likely that this is in reference to the animatronics, who are made of metal but are alive."
So the animatronics could simply be "living metal", or this could simply be a relevant reference.
I didn't dig any of this up so I can't say I know anything concrete about the lore, it's just someone else's theory.