I have a hard time following this line of reasoning. I don't think GP's point is to "ignore systemic discrimination". Rather, it is to ignore those things on which people are discriminated. How can you discriminate against, say, race, if you don't pay attention to the person's race?

Specifically, for tech, if you happen upon a code written by someone called "didgetmaster" on github, and the author makes no comment about who they are as a person, how does this contribute to discrimination? Isn't this the whole point of anonymous resumes and such to fight discrimination against minorities for employment?