The point of the article was how illogical the whole transgender ideology is. It makes zero sense and is antithetical to scientific reality.
If a guy (young or old) wants to wear a dress or play with dolls or wear pink, they are free to do so. There may be consequences, but they aren't life changing. (I have seen cases of single women pushing their sons to be girls because they've been hurt by guys and hate guys. This is wrong and is child abuse). If a girl wants to play tackle football, shoot guns, ride motorcyles, and study to become an electrical engineer (like me), she is welcome to do so. Many of my activities over my life, but especially when I was younger, were very tom-boyish. It would have ruined my life to allow , or especially encouraged, me to physically alter myself. I am happily married, have 2 kids, and wear dresses almost exclusively even if I still can enjoy occassionally doing my old tom-boy activities.
Physically altering a person into something they are not is so harmful. At minimum, it should be discourage. I do agree with you, though, that I don't like the government forcing adults to do or not do anything, but this transgender nonsense should not be encouraged.
There is a big difference between saying an adult can't do something and encouraging people to do something harmful, especially minors. That is our biggest problem right now. I empathize with your concern over freedom for adults, but we all need to go back to thinking logically and not denying reality and not encouraging a disconnect with reality.