"...with a splinter group set up to oppose it and advocate trans inclusion."
Deeds not words, go for it and take all the unhinged loons who are using the girls in their troupes as pawns in their batshit ideology with you.
"The challenge will address concerns about growing activism within Girlguiding, including leaders buying pro-trans badges for units, encouraging children to attend protests and distributing unofficial materials about gender identity."
How is this about Girl Guiding? How is this meeting the aims of the organisation and in keeping with their charitable status? The sooner these loons leave and set up their mirror organisation the better. I'd donate to a crowd funder if it made them leave quicker.