what you said can be applied to literally any job. Not a valid point when it comes to tech in particular
There are also, for whatever reason, differences of employee distribution across gender, ethnicity, socioeconomic, etc.
I think it's reasonable to suspect that tech organizations overall would tend to have different hiring practices, cultures, and distributions of individual behavior than organizations in other fields overall.
I don't know the research on this, but there's a lot of grassroots talk that they do.