@MedusasBadHairDay
You know that whole thing where TRAs act like just because an idea is also held by people they've deemed problematic it is therefore a bad idea? Yeah, let's not do this here. Just because Stonewall think parent/guardian is better for gender identity reasons, doesn't mean parent/guardian doesn't make sense in terms of different family setups.
It's part of the wider whole, I think!
Stonewall have a stated aim, it's been there for over a decade. They work towards, in their own words, removing the protected characterstic of sex, single sex spaces as they deem this injurious to transpeople.
So we see a slow creep:
Remove sexed terms and replace it with gender neutral
Take sex out of everything, make gender the go to term.
That's what is really being objected to. The continued slow creep.