Cut & pasted - with permission - from a trans friend who didn't want her name attached because, understandably, she's sick of arguing about this. Basically, she was approached by a cis friend asking Why Are People Unhappy With JK Rowling.
Current wait times to be seen by gender youth services is 1.5-3 years. Patients aren't being hurried into life-changing decisions. The issue here is that JKR is presenting being trans as a worst case scenario that kids needs rescuing from.
You'd be about 5 years into transition and over 18 before anyone offered you surgery.
Cool. Literally no-one cares. Teens change their minds all the time. They haven't had surgery or started on meds in the majority of cases. That said, less than 2% of trans patients cease treatment. The studies mentioned were debunked years ago.
No-one is saying lesbians are being forced to have sex with trans women. But by implying this, you are insinuating trans women are rapists.
The only reason to worry about them is if you thought on some level trans women are rapists. If cis male rapists wanted to rape women in changing rooms they would. They wouldn't go to the trouble of joining a 3 year waiting list to begin transition.
Speaks for itself. JKR implies there is a 'right' way to be trans. To her, this is a full medical transition while also meekly acknowledging you're not a 'real woman'. Fuck that.
Most feminists include trans women, acknowledging there is no universal experience of womanhood. Trans women are women, albeit ones who've had a different experience of oppression in childhood.
And finally. WHO ASKED HER? Was the world waiting on the Harry Potter lady to decide what makes a woman? No.