I agree with the comment up thread that Rosen is over doing the "oh I didn't know that, what do you think". Probably as much a tactic to ensure he remains a much lauded children's author, so he is testing who he should or should not align himself with.
But if he works at Goldsmiths he must be aware of the issues, and the fact that Goldsmiths (well at least some of its academics) have been criticised for their aggressive trans agenda.
Also a bit confused about some of the comments about the word queer.
I myself have not clear idea of what it has or is meant to say. But understood that the Stonewall umbrella used Queer as a postive cover all term for the multitude of identities they now say the represent. Their definition is:
Queer is a term used by those wanting to reject specific labels of romantic orientation, sexual orientation and/or gender identity. It can also be a way of rejecting the perceived norms of the LGBT community (racism, sizeism, ableism etc). Although some LGBT people view the word as a slur, it was reclaimed in the late 80s by the queer community who have embraced it.
www.stonewall.org.uk/help-advice/glossary-terms#q
And certainly from the 80s it was the rise of queer politics in universities that spearheaded the backlash against women's liberation and women's studies.
I think the explanation given by the event organisers as to the use of the word queering is a deliberate underplay of what the intent actually is.