It pretty much is complete. Smutcube just keeps making small additions so that the game can technically still be in progress and he can milk those patreonbux.
Them adding in small additions to a completed game, I personally wouldn't call that milking (that's if it's actual completed).
Milking, to me, is when a dev purposely delay the completion of a game to get as much money as possible from the mindless droves.
Oh, but that doesn't count for features critical to the game. Even if you can get through the story from start to finish, if you left something important or promised out, then the game is still not complete until you add it in.
So if it's additional things like skins and what not, sure I'll say it's complete.
But if it's things that make the game feel more full (like new scenes, things that have a non-cosmetic effect), I'll say it's very much not completed.
Still one of the best FNAF H games with it's variety.....just wish I could swap out the models. Not exactly a turn off, but not really a turn on either.