To be fair, I think he only really cited that early on. Since then when he's been asked his reasoning has shifted to restaurant management and margins being tricky and not being within his skillset, which I honestly think is fair. FNAF already has a rough track record with crappy licensing situations, and if you look at stuff like mrbeast burger or how chuck e cheese is doing financially, I think it makes sense that he wouldnt wanna risk an IP tie in restaurant in an already dying genre of restaurant. I think it would only really ever survive as a temporary pop up or something.