He didn't say "unfair and divisive, and therefore bad for business", he said "unfair, divisive and bad for business". My ellipsis doesn't change the meaning, unless we are, once again, falling back on him presenting his ideas in an ambiguous manner. Which, even if true, makes misinterpretations his responsibility.

In the memo he literally asks for changes to make Google more welcoming for conservatives. He even claims this will be good for business. How do you square this with your contention that any kind of discrimination, even for positive purposes, will lead to negative outcomes due to it being unfair and divisive.

Does it make sense for him to be claiming both these things? I'm not sure that he is even saying that (though it seems tone deaf at the least to present both ideas in the same document).

Also, I'm really not sure that saying women score higher on neuroticism and therefore can't handle stressful jobs as well, or are introverts and so have trouble leading is purely about interest. I'm not sure where this defence about "only talking about interests" comes from, I don't get that from the document. It's certainly not explicitly spelled out.

I'm coming to the conclusion that people aren't just misinterpreting but have actually invented a totally fictitious memo that they find easier to defend than the real one.