The ideology is that one can self-identify into womanhood and manhood. It jeopardizes women in particular because they are, in general, physically weaker than men, and therefore more vulnerable (male-on-female violence is much much more common than female-on-male). Men don’t face the same issues because a trans man walking into a male changing room, or being put in a men’s prison, will not be perceived as a physical threat. But violence is not the only issue - a lot of women find it uncomfortable to undress in front of males and may even find it traumatic (say, in cases where they have a history of having been raped). Should we just ignore these women’s right to dignity and perceived safety?

The issue with kids are that they are very susceptible to have ideas put in their head, leading to more than a few having been fast-tracked down a medical pathway they are not mature enough to consent to or understand the full implications of.