That's his description of events, as told to Jordan B. Peterson.

"The child", now 20, responded that Musk was “cold,” “very quick to anger,” “narcissistic,” and described him as an absent father.

and further said

    that her father’s comments had “crossed a line,” and she countered that he “knew what he was doing when he agreed to her treatment” when she was 16

~ https://www.nbcnews.com/tech/tech-news/elon-musk-transgender...

~ https://www.nytimes.com/2024/07/26/business/media/elon-musk-...

It's not so cut and dried as you make out, it's a heated issue with strong opinions on either side.

That only works if you think transsexualism is a fad and people are talked into it. I don't agree and these treatments are not provided lightly.