He's saying how connie should have portrayed it to her parents, not his own view of them.
All the lines are about them hypothetically being moms
"Okay, okay, okay. Let's focus. Which of you -WOULD make the best and most nuclear mom? Garnet, you keep us safe by scaring off the bad guys, just like a mom WOULD ...But you're not the best conversationalist. Amethyst, you WOULD be a super fun mom!"
Better evidence would be Chille Tid. Where he gives Pearl the role of mom in his dream, suggesting he subconsciously sees her that way.
Steven needs to be needed. He needs problems to solve. If he tries to stay in beach city, he's going to implode.
Given his mood at the start of the movie and at the start of future, he's most content when he's working on something. So he should go to ocean town and build something.
James Phillips
He should go fight terrorists.
Landon Morris
an interesting theory but I don't think steven wants to be hypothetically speaking the bad guy I mean, I don't think an emperor like Steve is evil but people are stupid, so it would probably be a tyrant for them but I think it's good that he accepts his destiny and is a rougher person