Sorry Sandin. You may take offense but many of us here do not. Transgender - TG is our umbrella term used by most on this site. Labels are an aid to communication, sometimes accurate and sometimes not. If everyone talks clearly and already knows the topic and group involved, then maybe you can dismiss labels. The real world needs them. Not all of us are like you, a rare clear person.
I did not read the article so do not know the context to their objections to the term. If they were all TS, then they have a clear and defendable point. Otherwise, I doubt the validity of their statement/objections.