I know you're just quoting here, but for the record, the idea that AMAB/AFAB are "owned" by intersex people is bullshit. The terms were invented by the trans community, and a small minority of transphobes want to erase that, but they don't represent the majority of the intersex community or anyone else.
AMAB/AFAB means "they said 'it's a boy/girl' when you were born." That's all.
Sources:
* The reply to your link https://medium.com/p/fb8447cffdee/responses/show
* Reddit discussion https://www.reddit.com/r/asktransgender/comments/7glz6x/does...
* This article https://freedominwickedness.tumblr.com/post/34492218525/once...