I see in Disability News Service that several key disability charities (i.e. typically ones run principally by non-disabled people) are refusing to back the Jodie Whiting petition, the exception being Mind.
We may disagree on certain fundamental principles about the existence of charities, most of which aren't big names, but I think there'd be no disagreement that the loyalities of these supposed disability charities are in the wrong place.
I'm actually surprised over Mind speaking up because they often don't on things, but they're also getting more active over other issues.