Headscratchers / Five Nights at Freddy's VR: Help Wanted

• What's the deal with Curse of Dreadbear, and for that matter, Dreadbear himself? Fazbear Entertainment goes on that say that it's not made with "hidden intent", which is obviously Blatant Lies. As far as I'm aware, he was only made to show the us that artificial brains can be placed inside of Fazbear animatronics.
• If, from what is known, all of the FNAF games prior to this one are actual in-universe games made by a developer hired by Fazbear Entertainment, then does that mean that the events of the series happened differently, i.e. Phone Guy never actually recorded any calls and the voice was made by the developer himself or some other person, William is a made-up name for the killer just for an analogy, the FNAF 4 house is also fake, etc?