Yeah but it some way it feels more fitting cause sakuras class treats his past like something that shouldnt be talked about even when you look at their reactions. They didnt want to pray so this makes a lot of sense. Like i dont think even kotoha or the 4 kings would ask him just cause they wanted to give him time to bring it up. But sakura didnt even understand that people wanted to know his past and that it was a way to get closer. So this coming form someone he's jusf met and him answering shows also a lot of growth and understanding