I don't think he said that Google's sourcing programs themselves lower the bar. He seems to make two separate arguments: 1. Sourcing programs with race/gender

I don't think he said that Google's sourcing programs themselves lower the bar. He seems to make two separate arguments: 1. Sourcing programs with race/gender restrictions are unfair to those excluded, and bad for business because they restrict the funnel of participants. (The same criticism would apply if Google had a while-males-only program -- it would be bad business since it would restrict the funnel without a good business reason.) 2. Google's hiring process gives special treatment to certain "diversity" candidates. He doesn't give any details, and I don't know the context, but he linked to an internal discussion which seems to imply that a "more accurate" process might be applied with the intention of reducing false negatives. (Of course anyone reading a public copy won't see this.)