Yep. Most companies were hiring 'Chief Diversity Officer' types to inoculate themselves from the mob. Instead, the people they hired are leading the mob.
They basically let the vampire in.
That was a sentence I thought I'd never see written.
To your point, I'm glad you found that training to be helpful. The times I've been subjected to similar, I found it wasteful, condescending, and presumptive. So perhaps your mileage will vary.
"Don't be one to your friends, family, coworkers, or especially to our customers". The word is hard to define, but easy to recognize. And you kinda always know when you're being one.
Everyone has been one, and no one feels singled out or blamed. Doesn't let anybody leave feeling like a victim or a victor. Yet left people feeling powerful to call other people out for being one, without resorting to stronger language. That company had comradery; it's too bad it takes more than that.