Yeah, it shows how respectful Superman is. Even though putting handcuffs might be silly or even stupid, he still let them do it and doesn't laugh about it, but actually cares enough to explain Lois why he let them do it. I also like how he immediately discards the idea of being controlled. He is here to help. to do good, so why would you need to control someone like that unless you have ulterior motives? BvS explores that idea further with that news montage
Superman challenges humans to stop looking at everything from political point of view. If you can help - just help, it's not that hard.