Did you even read the memo? He explicitly asked to end the programs Google has set up to encourage more women and minority students to study Computer Science because they weren't a good use of resources.

There is no lower bar or quota. All of the diversity programs he mentioned are to encourage more applications.

Yes, I have done.

He actually asked for something different - for programs and classes to remain but for the exclusions based on race and gender (i.e. no men allowed) to be eliminated. He also pointed out that even Google's resources are finite, and thus the costs and benefits of diversity programmes should be judged rationally, e.g. he suggests that mandatory 'unconscious bias' training doesn't seem to have made any difference. So is it worth requiring it? These are reasonable questions anyone can ask.