In terms of art style, no. The whole off model thing has been around since adventure time and CN has basically made it obligatory in every cartoon nowadays.
In terms of writing, maybe, but its too soon to know. Craig of the creek clearly was created because of the creators work at SU, but OK KO was Ian´s dream from a while ago. And Ian has a respectable carreer in the animation industry, so he kinda earned his own show.
In terms of gay shit, while people will claim its on her, its actually on korra. The reaction to that 2 second hand holding was so massive it actually has allowed a lot of networks to say "ok" to gay people being represented in kids cartoons. Not because they are progressive but because they bring money.
And they are right. The adventure time finale was trending. Not because the show was over, but because there was a gay kiss.