Ironically, this was most likely cringe because there were no minorities on the staff, a consequence of: no diversity.
I observed a similar event in the early 90's when a bunch of white folk in HR tried to show off diversity during a co-op tour and had posters of Africa all over the room. But why would I expect someone who just learned the term to actually grok it?
Bummer you go the offensive end of that.
EDIT: From the article "It was when I first realized that tech leaders have no idea what it is to manage work dynamics through a gendered lens."
When minorities are made "ambassadors" as though they suddenly speak for EVERYONE in their minority, it is awful, and wrong. People don't get this: "But X minority said it was OK..." No, it takes literal diversity of opinion.