People often making the mistake of forgetting or not knowing that "TransGender" is a spectrum that covers anything and everything between Cis-Female and Cis-Male. Within that spectrum also resides the Non-Binaries of the world, those that don't neatly fit close to the opposite ends of female or male.
I suspect these youtubers (I hope) are just ignorant. There seems to be this "Expectation", or definition, of what a TG person is, even within the community. This shows up in many different ways. Perhaps I see it a lot since "Living up to Expectations" is a bit of a thing for me. If you are truly "Trans" then thou shall look a certain way, act a certain way and do all sorts of things in the quest to heal thyself. A bit of irony I think when not fitting into "The Binary" of male or female is what being trans is. Yet there are the preachers out there that know the way to the promised land
IMO, "Non-Binary" is a simple way for a person to self-describe that they feel or know they don't fit into some ideal or expectations for gender or even life-style. A clean simple term for deeply complicated, deeply personal choices and decisions.
Well, I can tell you for me trying to fit into that model for "Trans" sure led to a lot of depression as well as a far from "Optimum" life lived. (I refuse to say wasted, it was and is far from it) Because of failed transition experiments back in my early 20's (not fitting into said expectations of trans), this round peg decided to force fit myself back into a square hole. Even 7 years ago when I saw that this wasn't working I still sort "wanted" myself to fit into that round hole that time. But still at 6ft tall, big everything, deep voice and now a very deeply entrenched male life it wasn't going to happen without likely blowing up everything else that meant something to me, that I defined myself by
I have had no doubt I felt and wanted to be a girl since like the age of 4. HRT, even low dose, has been a life saver for me. Today I have a body I feel good about living in, which was a totally foreign concept until these past few years. I obtained my life long dream of being seen as a woman experiencing the sheer joy of being Me as I moved about the real world as the real me. All the time still retaining my very well entrenched life as "him". The dangly bits never really freaked me out. Life is what it is. You play the hand you were dealt. The boys and I have had some great times together. Balding since 14 bothers me more. (OK 'bothered'. That ship sank long ago)
I medically transitioned with HRT. No surgeries as yet. Lived part time as a woman so in a way socially transitioned. Now thanks to shedding a ton of emotional baggage, I know if I NEEDED to I can and will do full-time. Today, I only want to, but.... life is complicated
So which label am I? Trans-woman? Transsexual woman? Androgyne? Male cross-dresser? Freak? (just covering all the bases) Or the quick, easy NB since I don't neatly fit into female, nor even male these days with a B cup.