Summary: "I can't tell the difference between discriminatory hiring [rejecting based on identity] and targeted hiring [seeking people out based on identity]."

Author even acknowledges the previous policy (which does sound discriminatory based on their framing) is no longer in place at LLVM, which is the focus of the article.

This is not really about "open source." It's about LLVM, and springs off randomly at "open source" using poor-quality non-citations, weasel words (of the species "some people say"), and other hallmarks of bad, ideologically-tilted writing.