Yes because tech is much more culturally diverse, with large amounts of immigrants and second generation children of immigrants. If you've ever worked at a large tech company, you would know that the average team is very quiet because of the cultural barriers. The few Americans on the team are very introverted and again have a slight cultural barrier even with each other because many of them are the children of immigrants. The frat % is undoubtedly much lower in tech (if it's even represented at all) compared to banking.