Because in some places, some families feel that eating bowls is like begging, while others don't think there is anything wrong with eating bowls. Isn't it more convenient to eat a bowl? Animals don't behave normally when they eat, do they?
So eating the wrong bowl depends on your own specific situation. Teach you a way. When you eat, watch others do something wrong first. If almost everyone misbehaves, do as the Romans do. If there are both end bowls and improper bowls, the number is not much different, then it depends on personal preference.