Fan theory:

What if black wasn't in the wrong.

hear me out because this is going to go very very deep.

In normal mode everyone looks happy right?

Until the evil black shows up... black evil...

WRONG. 

ALL OF YOU.

although it might seem as if black where their undertakers, he wasn't in the wrong. Because the 19 sprunkis/sprunkies (idk what the plural of sprunki is) had the souls of innocent victims trapped in their vessel, forced to sing a fanfare 24/7, until black, who had enough of the torment, saved the innocent from suffering by ending it all for them. He saved them, and thats why he doesnt look as distorted and creepy as usual. but you might be thinking "what about gray, wenda, Durple, MFC and jevin?" Dont you think its odd the only survivors have serious issues? First gray, he is very sad, almost never pleased by simple enlightens, his sadness and his hatred for it all makes him go insane, he is scared of the unknown and black spared him for so, but he now feels the pain from it all, and jevin, he is a cultest, black tryed to get him to let go, but jevin kept holding on, ge went into the dark alone, he now has gone mentally insane aswell and what made him lose it was the though he kept telling himself when no response was heard "god will save us." Wenda, is known to be one of the rebels of the group, always doing the opposite of what she is told, so when wenda heard the news she walked back instead of up, and she to faced eternal torment. Her vision was blinded once she finally saw the truth, black tryed to help, but only made things worse, the only thing she could do was scream of pain. Durple is a soft kind hearted soul, who helped mr. Black deliver his duty, but for 1 cost, his very own. He had become somthing of a mix between pleased and pain, but he never truly did get eternal peace. And lastly, MFC, the only non-sprunki like character, doesnt have a soul, and cannot be brought to the end, so they where forced to face it from the start, without a chance at anything. And before you say anything about the jumpscare, just know that what you did to him, is obviously going to make one mad, so he is very mad at you and does that jumpscare at you.

Somtimes, the way things are, arnt the way you see them.