sometimes its like Cawthon, where it is just meant to make the game relevant longer by adding secrets, but in Tobys case, its just lore, and part of the story if he used that tactic to pull undertale 2 out of his ass, then id agree with your statement

says the brony, whos fandom forces itself into most things, ruining it. pony Steven universe. pony anime, pony sponge bob, pony porn, pony live action shows, PONY FUCKING SUPER HEROES. yeah. and an amazing game that deserves the praise is annoying. fuck you. you have it ALL wrong.