@SapphosRock
"Don't worry there's been plenty of posts on this thread excusing, minimising and denying Posie said trans men should be sterilised."
Well I did none of those things so there was really no need to say all that but thanks for caring.
"And of course she retracted it (after repeating it multiple times on various different social media platforms) which makes it okay..."
I don't think she repeated it multiple times on various different social media platforms but, in any event, she retracted it after thinking it through, which does make it OK, AFAIC. People should be allowed to change their minds, IMO, and not have their intemperate remarks held against them for the rest of their lives.
"What makes you agree with this?"
Well, firstly, because I believe it is unethical to pretend to be something you are not and, secondly, because those who do so - including every trans 'man' I've ever seen, tend to normalise harmful and regressive gender stereotypes that we should be working to abolish. I don't see how a woman who claims to be a man can be a good example to a child.
"And how on earth can you justify it seeing as being transgender is a protected characteristic along with religion, disability, sexuality etc?"
See above. I justify my opinion according to ethical principles - I don't have to justify it legally.