It's a company though, I don't see how diversity is important. The goal is to make money and they should hire the best people that apply, unrelated to the color of their skin.
I work for a company which is very diverse and I like it, I just don't see how it matters as a company goal (assuming that having "only white men" works for them currently).
Sure, lots of people don't. And that's why they do the kind of things that the author talks about that signal "we're all like this here and we're looking for people just like us".
But, when you do that, you should be aware that that is exactly what you are signalling.
And that's OK, because these people are toxic.
say there's five companies attracting just men, and there's one company attracting both men and women, all six are competing for the men, but only one gets the best women
The second company might however have a really hard time hiring if it's limiting itself to a small subset of the hiring pool.