This seems partly in response to controversies around anti-trans feminists booking Quaker meetinghouses for talks.
YFGM aims to be a welcoming and accessible space for people of all gender identities where people feel included and oppressive behaviour is not accepted. We recognise we have further work to do including some more immediate changes, and creating space to nurture deeper cultural changes within both YFGM and the wider Society of Friends.
http://yfgm.quaker.org.uk/docs/trans-and-non-binary-statement/