I told said boss exactly how many times the complainant should be fired but needless to say, their identity was protected and nothing happened. If you believe that can't happen you're not really aware of how these people think. The next step is an admin/site-level setting that allows "uninclusive" language to force-disable sharing. You wait and see.
If this was implicit in your presentation, then I think I can see why you were reported to HR.
But, look, maybe you didn't deserve to be reported. Anyone can report anything to HR.
Obviously, if you're teaching people how to eliminate bias in an interview process then people who believe that absence of pro-female bias is "sexism" will consider it implicitly sexist, regardless of intent. But that's a nonsensical inversion of basic English and morality. People who report others to HR for that would be fired in any competent company (this one wasn't).
I mean, how many times has this happened to anyone, let alone the individual in question?
I don't call Japanese customers Japs even though that used to be a valid English term because it is now widely considered offensive. These are terms that some groups find offensive and more may find offensive in the future. It makes sense to stay ahead of the game and not cause offense if it costs me nothing to do it, and it makes sense for Google to help people who are trying not to offend people do so easily.