you are never too young for PSTD

And it isn't like Steven didn't already have mother issues with the fact that he felt that the crystal gems somehow blame him for Rose's absence,

Now he knows that the role model whose gap he has been trying to fill has hurt those close to her… and even killed before. And steven has had to deal with true, real, deep seated animosity aimed at him… due simply to the fact that people confuse him for Rose.

This has been kind of a time bomb ever since JailBreak. I somewhat noticed this ever since he opened up to the cool kids int hat car ride- that steven is going to get caught up in a large, bloody war that he originally didn't have much of a stake in.