Not picking any fights, I'd love to really understand this sentiment more. In my entire career I've dealt with co-workers who observably considered me less smart. To the point I barely think it was their innate nature but more so a by product of being a programmer. Too much isolation and brain reward circuitry leads to inflated egos.
I understand that the comment I quoted is speaking of sexist discrimination, but if I re-read it removing female and replacing men with people, it would be a pretty apt description of my life as a developer.
I believe that it would be hard to delineate whether it was discrimination or just work place egos if you weren't from a similar background e.g. minority groups
Sidestory: I'm an Indigenous Australian, plenty of times in my life I have seen family and friends make statements, that I'm sure plenty of you have also seen such as "You are racist" or "That's racist" when clearly to a third party the accuser seems way off the mark.