He just tweeted, asking for input, twitter.com/MichaelRosenYes/status/1217373545803780097here. I don't have twitter - I don't find the endless fights enlivening - but if people want to explain then this is an opportunity.
My suggestion would be providing the BISH guide, which is every bit as sexist and regressive, and also the Hayward Gallery exhibition being deemed suitable for primary aged children, despite featuring latex, a furry suit and an erect penis. Interesting exhibition for adults, absolutely, but horrific for school trips. That should be well under the heading of A Level age plus.
Might also be worth pointing out that a book which centres the feelings of an adult trans person over their child, aimed at children, is not ideal. And that Stonewall's present stance erases women's rights to safety and privacy from people with male bodies - because those people are provably a risk to us, and social transition does not alter that reality one iota - and is in some ways homophobic. And that women wanting to meet to talk about this are so threatened and abused that they have to hold those meetings in secret venues for their own safety - yet they are the ones called hateful bigots.
He always has seemed one of the good guys, and he's asking for input in a reasonable, concerned way.
It's absolutely right that people should show respect and concern for the needs of trans people. It's just that ignoring the needs of women to prioritise the needs of people of male biology, and calling that progressive, is clearly deeply and wholly misogynist. As is saying little girls are pink and fluffy, and boys strong and adventurous, and if you deviate from that then your gender identity is fluid. Which I imagine Mr Rosen is also startled by - hence the asking for more information.