Well, you know , first you have to understand that Jill simp where and likely still very big donor of DPC. But, it also was a curse, Jill's simps, constantly dominated every fan poll DPC where putting out, so much so that it created an extremly un balanced " Special Render Reward " system, that DPC forced to change at least 3 times.
This constant Jill domination, was not only unbalanced, but very very boring for DPC , of curse since her simps are also extremely big donors it is very little he could do about it , since he can't openly offend them buy saying that, "chill now, guys, let others have their fun ." but over the years he tried.
First he decide, to make her to be only available, to the Pussy Beta male Path, and then, He take her character and give her a 180 Turn, Turning her into a Naive Cringe idiot, also spend time to make her look really wierd wiht her smiling .
Despite these, it was not enough, because on the other hand he was very careful, and made sure Rusty did not Fucked her and that she is a pure Virgin.
so her simps still remained the same. DPC than decide, that He gonna Troll the Jill Simps, and He gave her the Banana costume, and an extremely cringe fest behaviour during ep 9, some of her line legit painful , HE had a lots of fun Trolling them, but of course He did not want to offend the Simps, so when he asked about it, he gave a safe answer of, " oh that just Jill's funny personality "
as you can imagine, it worked, and simps believe it's cute, and silly, and Jill Bean and etc etc, but the Reality is simple,
DPC Was simply TROLLING ! 
I hope this answered your Question
