I believe fully in trans rights, and any reason why a person may be trans has no bearing on whether that person should have equal status in society as anyone else.

And this kind of argument is to me a dangerous sociopolitical mistake:

> While these are endocrine disrupting chemicals, people aren't transgender because their hormones are imbalanced.

One should acknowledge that there may be a very significant difference between hormone effects in a breastfeeding infant while the brain is full tilt in the process of wiring itself vs later in life after things like language and identity are established. We definitely don't know. We can also acknowledge that we don't know how hormone effects combine with environmental/social effects. That need not alter one's feelings about gender diversity.

It's the same as the "gay people didn't choose to be gay" argument when really it should just be ok to be gay. Don't let reasons get in the way of reason.