You think HN is filled with people from the humanities fields? That would be odd. At minimum I think it’s fair to say that HN has a majority that don’t. In which case, if that dictated their views, your post should be net positive on votes. Instead I think it’s more likely that plenty of HN folks that work in STEM fields have also known people who are very smart that don’t work in such fields.

Being good at something doesn’t automatically make a person go into that for their career.