Does it cost you anything to modify a pronoun? Have you lost anything by doing so?
Yes, my own integrity and self respect. I gain shame of supporting an ideology that harms people. Not just the silent voices: rape victims, women who can't compete in sports, abused kids, but also in 10 years we'll be knee deep in lawsuits from these same people now demanding they be changed demanding that they were damaged by the changes they demanded.
I think the "health care" industry have just hit on a way to monetize the mentally ill instead of treating them.
Q: Can I self-identify as a Chinaman? Maybe get some surgery to change my eyes? Or how about if I want to be a black man? Can I wear blackface to help me transition?
It would be way, way easier for me to become a Chinese man or a black man than to become a woman. But I suspect both would be considered offensive and rather silly. Why?
I don't know anything about this "Taylor" person other than that they chose to come to my site intent on causing trouble and then attempt to spread that on Twitter. So don't tell me they are a lovely person and I've misjudged them. They may be strategically nice to you to gain your support, but if they have been doing bad things to people for many years I don't put much value in it.