I HATE the current version of the story of fnaf, making the books canon was the biggest shit ever made since make the games impossible to understand without reading the books which is a horrible way to say "buy my merchandise god damnit", there are some concepts that I do like which are mimic and glitchtrap (ignoring the afton part of it) and the way that is not animatronics possessed anymore but the way is executed is just awful.

There are only 3 ways that I see a good way to fix the story

1- doing a big popgoes and end all the things related with Fazbear and just change to totally new animatronics, totally new victims, totally new antagonist etc

2- end everything and make a reboot, start from the beginnings and fix the errors that were made in the past in a new reimagination of the series.

3- do both rebooting everything and changing everything.

The current FNAF lore can perfectly works in only books so I don't really see a problem with this ideas, however, I'm not steel wool or Scott cawthon to say what it should and shouldn't be made for the whole series.