The mechanics are different but it makes no difference whatsoever to the sentiment. Everything Carlin says about American politics is entirely applicable to British politics.
To be clear I'm asking what you think a biologist could tell Rowling that would challenge her. You seem to be saying that a biologist could tell Rowling that biology is fuzzy at the edges. What makes you think this would challenge Rowling?
I'm curious whether she has actually come out with any hate speech. Can you point to anything she's said which is hate speech? By which I mean real hate speech and not just speech whose underlying motive you believe to be hate?
For example, this is hate speech:
"Illegal immigrants are lazy good-for-nothings and should all be deported."
This is not hate speech:
"Illegal immigration is terrible and I wish the government would do something about it."
Women who have gone through sexual assault? Is changing in front of a trans woman=not existing? Genuinely confused
I interpreted it to mean that Tennant wants female sexual assault survivors who have issues being treated by males (and all the other kinds of people Rowling mentioned) to cease to exist so that Tennant doesn't have to account for their needs.
The mechanics are different but it makes no difference whatsoever to the sentiment. Everything Carlin says about American politics is entirely applicable to British politics.