From that article:
"One day in 2019 I noticed a thread on social media that a work colleague had started. It said only women born female can be women. An argument on Facebook ensued with my “side” and her “side” arguing over this point, as I tried to make her see that trans women are women, just as much as she was, and that they were the victims because they couldn’t help being born male. I was incensed at her bigotry. So after several days stewing over this I contacted my LGBT group, and our HR department.
I showed them the social media posts and asked “is this hate?”. I was aware of the hate that was covered up with concern — Stonewall had told me to beware of such a line of attack, and the trans group agreed. Yes this was hate and I should report her. Eventually I did, but even then something didn’t feel quite right. I had expected to feel “righteous” as she was told to take her post down or face consequences. She complied, I’d won and stopped hate. Hadn’t I?"
I was the work colleague he reported. I've still not forgiven him, though I'm pleased that he has revised his opinions.
I'd also like to clarify that I was not told to remove my social media post by HR. I chose to do so before they even contacted me, as I couldn't face an argument at that stage (I'd probably welcome it now!)
When I did finally have a discussion with HR they agreed that there was nothing hateful in my comments.