I share your skepticism but take it a step further: can corporations actually care about something other than money? I don't think it even makes sense to anthropomorphize organizations that are governed by profit-before-all shareholders with limited liability and directors with a fiduciary duty to maximize returns.

At the end of the day, the workers the tech companies are competing for do care and that's what matters.

I think it is more about the attitudes than the numbers - there is a neophillia and xenophilia that is pro-diversity.

They don't seem to particularly care about the resulting demographics and occasionally get caught with insensitive assumptions like algorithms that fail to detect dark skinned people due to bad assumptions about how light reflects but they don't like the close-mindedness of xenophobes and homophobes.