If you guys wanna know what happens behind those closed doors, its probably because Steven Universe is one of their 'high production' cartoons, when they seem to be into the "Teen titan's GO!" easy to produce and animate stuff if the new PPG and the soon to be new Samurai Jack Kid gets greenlit. And they kinda want to get rid of it without making it obvious they're getting rid of it since it costs so much to produce.

Thats what it seems like to me at least.