Speaking as someone with a MTF close friend and NB spouse, but the term used in the article is the term everyone around me used when I was growing up. That term may be obsolete now, and if so, the author simply needs to be informed. There’s no need to assume they meant harm by it.
If they knowingly used a term that may offend, then that’s of course a separate issue.
Are they policing font usage or something? If so, I have some opinions on the matter, and everyone who disagrees is wrong of course.