If I donate to cancer research and find out that the money went on a "diversity in research" campaign, I'd be of the opinion that my money had been misused. Not because diversity in sciences isn't important, but because that wasn't what I wanted to spend my donation on.

I think diversity is just being used as a proxy for "social do-gooding, rather than tech do-gooding" and the commenter feels the former is not the thing s/he cares to support. Which is fine! I choose not to support all sorts of nominally good things. Lets not witch-hunt people for caring about different things.