I did skim read the whole of the proceedings too and am happy that the attempt to conflate gender and sex can't continue.
I do suspect however that the GRA act might need clarification in some practical terms.
The are bits of the ruling that are relevant to GRA
""As I shall explain later in this hand down speech, the Equality Act 2010 gives transgender people protection, not only against discrimination through the protected characteristic of gender reassignment, but also against direct discrimination, indirect discrimination and harassment in substance in their acquired gender," Lord Hodge says"
Later it explains
" Although many provisions of the GRA 2004 have been overtaken by other legislative developments, we consider that the Act continues to have relevance and importance in providing for legal recognition of the rights of transgender people.
This recognition of their changed status has practical effects for individual rights and freedoms (including, for example, in the context of marriage, pensions, retirement and social security) but also in recognising their personal autonomy and dignity and avoiding unacceptable discordance in their sense of identity as a transgender person living in an acquired gender.
We also agree with the Scottish Ministers that the GRA 2004 is concerned with relationships between private parties as well as between the transgender person and the state".