I think it's about power. Having power over other people is a fairly stong emotional feeling, couple that with a large dollop of self-righteousness and the world's your oyster to do with and treat as you please. Some one disagrees with your beliefs? You other them, they are stupid and lesser, they need to be taught how to think correctly.
Once you've decided someone is lesser then all sorts of behaviour that normally would be considered unconcionable becomes both aceptable and even necessary to correct the lesser person. See "untermensch".
If you're in power over an organisation there's literally no one to challenge your superiority. Even the slightest question of the only acceptable worldview must be stamped down on hard. See Roz Adams tribunal.
I would hope if I ever worked in a place like ERCC that my driving goal would be to help the women who need the help of ERCC, but that's clearly not the priority of the recent ERCC. It does boggle my mind how heartless ERCC has treated women who've asked for single sex support. Just trying to understand the mindset of someone who's internal thought process goes something like "ok yeah you've been raped multiple times in your own home, big deal, but your request for single sex support is a really problematic and we are going to force you to "re-frame your trauma" and make you a better person than the snivelling shit you clearly are" blows my mind. How is it even possible to have a position of power at an organisation whose sole purpose is to help vulnerable women, and not give two fucks about them, to feel distain for them? The lack of compassion or human dignity towards the very people you are there to help who have already been through their own person hell is appaling. I would imagine that words like narcissist and sociopath would be required to explain the behaviour properly. I think the people who coined the word untermensch would find that mindset much easier to understand and accept.
Going back to the power, I'd like to point out places like ERCC are places of last resort, the importance of that being if the ERCC is also treating you abusively there literally is nowhere else to turn to. You're at you very lowest, the whole world is nothing but pain, you turn to the rape crisis centre for help, and they start giving a bollocking because you asked for single sex support. Can you imagine what it must feel like for a person in the most painful mental space to be told how awful they are by the organisation supposed to be helping them? The self worth taking another battering from the people meant to help, "maybe it's me after all?" How can a person do that to another person in such need, and think they are the good guy? How is that a safe space? Idiots drunk on power has bloody awful consequences. The sooner this festering atrocity ends the better. Brindley must go to stop others being harmed.