Why are 'trans' males out of bounds for feminists?

I think this every time someone says something like "a tiny, vocal minority" or "most oldfashioned transsexuals are this whereas TRAs are that" or "no-one is saying the risk from REAL transgender people is higher..."

I think - well, we just don't know, do we? Risk can be higher, lower or the same as other groups, but unless we record and measure this objectively we'll never find out.

All we can say is that a body of evidence is slowly building about risk of TiMs and their rates of criminality compared to other males, but that the data is extraordinarily difficult to get to because of the obfuscation that occurs when recording 'gender identity' instead of sex. And that we hardly EVER hear anything about TiFs from which to build a picture. But that the difference in criminality between TiFs and TiMs is huge.

Not for the first time, I think you're using a different definition of "transwoman" to me. The definition I'm using is the Stonewall one.

Why is it 'transphobic' 'hate' to point out that transwomen are part of this male class and do indeed despite their 'identity' conform to 'male' patterns which harm women to the same degree as other males

What do you think shapes male behaviour?

Is it upbringing? Socialisation? Or just by virtue of male genes?

Yes particularly I'd like to see the evidence that trans identified males are less violent or likely to commit sexual crime than other males

Maybe because transwomen are different in socialisation, upbringing and personality to your average male - especially those who undertake HRT and surgery.

So that is going to have an effect on their behaviour.

Yes particularly I'd like to see the evidence that trans identified males are less violent or likely to commit sexual crime than other males. Then we can have an informed conversation about risk.