Good for them. They obviously recognise the importance of sex, particularly for girls.
The body's fears are centred around the fact that it is only able to operate a single-sex admissions policy without breaching the Equality Act because of an exemption related to biological sex.
I don't know why they use the word 'fears'. They are entirely correct. All the government needs to say is yes, that's right, that's what the exceptions are for, you're using it correctly and for the reason its intended.
I sincerely hope they do. Confirmation from Liz Truss would be invaluable.