Just thought people would like to see the headline infographic put together by Ross Tucker (lead sports scientist on the World Rugby study).
They looked at I think it was 84 scientific studies of the effects of androgen blockers and cross-sex hormones on performance, including the recent very thorough one by the Karolinska institute. Barring a few outliers among the papers (Joanna "I looked at 8 self-selecting amateur trans distance runners" Harper), the overwhelming consensus was that androgen blockers do not magically undo the effects of male puberty.
So, no, English RFU, we are not waiting for the scientific evidence. We have the scientific evidence. Male bodied humans, no matter how they feel inside their heads, still retain a size, strength and speed advantage over female bodied humans, such that if you insist on them all playing mixed rugby, will put the female bodied humans at a 30% greater risk of serious injury. And - reminder - in rugby, serious injury often means serious spinal injury which can leave someone paralysed or dead.
There is no way of reading your decision other than that you are a complete shower of fucking misogynistic wankers who don't give a shit about safety or fairness, at least not when the people involved are women.