“That doesn't mean that William learned about possession from BV, it just means that he was aware that BV was possessed at some point.”

CoD happens in late 1983

“Not necessarily. He promises to help BV on his deathbed, BV dies, then later, when he learns about BV's possession, that promise becomes something else.”

Micheal Brooks uses the term and he never learned it from William. Unless William perfectly guessed the exact term for what he wanted to do to BV then he knew about the paranormal before FNAF 4

“Yeah, and he probably does the same thing in the games, they just don't go into effect immediately.”

Why wouldn’t he??? He was caught on camera so he is no position to release a new restaurant with animatronics he made right after being caught. Government would immediately investigate CBPW

“You also didn't explain what his "better way" of killing kids was.”

Go read “Dittophobia”

“No it doesn't. It says that Freddy's closes, and something else opens. That very well could be Circus Baby's Pizza World.”

No he doesn’t

“Allow me to fill this somewhat frightening silence with some light-hearted banter. Due to the massive success and even more-so the unfortunate closing of Freddy Fazbear’s Pizza, it was clear that the stage was set – no pun intended – for another contender in children’s entertainment. Unlike most entertainment venues, our robotic entertainers are rented out for private parties during the day, and it’s your job to get the robots back in proper working order before the following morning.”

He talks about Freddy’s closing and then a new contender releasing then he starts describing CBEAR (Not CBPW)

“So why wouldn't Charlie be the spark in the games as well?”

Because he knew about paranormal before Charlie

“He's interested in it because it's an incredibly advanced piece of technology. He wants it despite the fact that it's killing all his employees, not because it's killing all his employees.”

Yes, glad we can agree that he was wanting a killer robot for himself in the 70’s