I doubt that Starmer has even considered the issues. Anyone with half a brain can see the problems (eg placing males in female prisons, the unfairness of males in female sport, plain and simple biological facts etc) once they look. And once seen, they cannot be unseen.
When Labour gets into power, changes will happen with deals being done behind closed doors. Stonewall-influenced laws will be brought in whether we like it or not - or so they expect. We will need more than ever, a free press and the politicians who are speaking up, and of course, freedom of speech and this precious website.