It’s inherent feature of human reasoning across the board. Everyone does broad generalizations about other people based on more or less unrelated information about them. Just yesterday someone here was getting upvoted for implying people driving lifted trucks are racists. It’s the same logic at work there. It’s othering. Us vs. them and so on. It may have been useful when we still lived in tribes but doesn’t quite work with how society is today.
No it’s not but I think you know that. Why did you need to make a new account to ask this?