I think many parents of SJWs are trying to walk a line. All parents, from my Cllrs and MP to Jonathan Ross and Ulrika. Being open about not supporting self ID and gender ideology will mean there are rows at home so some will just be 'educated' to keep the peace.
That 42% figure is hopefully lower now and people can speak up but it really depends a lot on your family, work and home life.
All the more reason for us here at MN to be grateful and keep the faith. It's working.