I wonder if it was a generation thing, but in other manga I saw butter rice and fried bread crust are not embarrassing in any way. It's basically being treated/viewed the same as a tamagokake gohan, that raw egg on rice. It's a quick meal or snack for home that you probably wouldn't give to guests, but also not a weird or laughingstock matter.
My kind of butter rice is really just butter and rice, maybe some salt if I want a bit of a kick. Sometime I add ketchup.
Love the fried flour breading off fried chicken too. If I eat like KFC or similar sorts of fried chicken, I peel off the breading, eat that first, then eat the chicken.