Those people were probably thinking like nobles. The heirarchy will always be there and they will always have the mindset of the lowest of the heirarchy to be weak that's why those people never wanted to admit that an [Unemployed] is strong. Also another reason because maybe they always bid on the people with a [Profession] and they lost everytime hahahaha. And for the participants of the colloseum which he defeated might hate him more because not only did they lose from a guy that used their own skill much better than them but they also won't admit that an [Unemployed] is stronger than a guy with a [Profession]. But Im not applying to everyone, it's just that most people act and think like that.