Nobody is buying the "you threaten the existence of blablabla". I do not deny the EXISTENCE of people who hold delusional beliefs. If their "existence" in their desired category somehow depends on people affirming their beliefs, then obviously their beliefs are not true. For example, I am a woman, and my "existence" continues in that state whether or not anyone affirms that, because it is REALITY.
Here's the actual truth of who is "threatening" who: men in women's spaces are a threat to women and girls. They are raping women and girls. This is not hypothetical, it has already occurred. Trans ideology is a threat to the safety of women and girls and has already caused harm.
Who else is "threatened" by trans ideology? The innocent children who are castrated and sterilized in the name of it.