Diversity programs do not universally benefit white collar workers.

Not directly but they do create an open and fair working environment for all.

Once you leave room for discrimination and bullying, everyone suffers because it makes company culture harder.

And it's not just about "quotas". That's an extreme-right talking point. Diversity done properly doesn't involve quotas. Those are just a way for companies that don't actually care about it to have an easy 'fix' to get their numbers to look ok but it's not actual diversity.

I'm part of a diversity team myself as a side role. In Europe luckily.