I don't think it's appropriate for posters to be speculating in detail about a violent perpetrators possible mental illnesses. If true it's sensitive personal data. Citing a violent offenders possible mental state shouldn't be used to shut up women out of fear of what else the offender may go on to do and you're stigmatising those with genuine mental illness by associating them with said violent offender. And on a feminist board if all places it's inappropriate to suggest that by talking about a violent perpetrator we're somehow responsible if their violence escalates 
I absolutely think referring to their appearance is relevant barrackers superb article 'pronouns are rophypol' (sp?) tells us what happens to our thought processes when we are silent about the disconnect between what we can see and how they are described.
I am still careful how what I post as I've no wish to be suspended but I'm so fucking fed up with being polite in my head.
I've also realised one reason my husband doesn't notice TW in real life because his, like most men's, eyes skate straight over women they perceive as ugly with no second glance and barely a first glance, so he's largely oblivious to the presence of TW in real life.
That a male person would be perceived as an ugly woman when they wear womanface is very relevant to why we notice them and men don't.