By watching Contrapoints! No, seriously, very informative and a good starting point imo.
I never saw the original post, so I don't know what was said. I do know that even with the best intentions, coming from a place of ignorance can lead to hurting others unintentionally. Reading or watching any content on the subject has shown me just how scary those with bad intentions are. So I can completely understand the triggering nature of even innocent questions. A lot of the time, they can reflect some of the worst talking points of those with bad intentions. The vast majority of us are ignorant on this subject. As much as I have learned over the last couple of years, I know I am.
As Imjenn has shown us, as difficult as it can be, so many people in the community show great kindness and patience.