I see the Supreme Court ruling as striking just about the right balance in law. It affirms single-sex spaces as actually being single-sex, and confirms that both sex and "gender reassignment" are protected characteristics in the Equality Act. So sex-based rights are upheld and at the same time there are protections against discrimination for the trans-identified.
As an example of how this should work going forward: a male work colleague who decides to start calling himself a woman and putting "she/her" in his email signature and so on can't be discriminated against because of this, which is fair. But also his female colleagues can be assured he has no right to start barging in on the women's toilets or changing rooms, which is also fair.
Back on the topic of boycotting Netflix, I personally think it's an overreaction. The whole gender identity ideological system sits somewhere between ludicrous and sexist, depending on exactly which beliefs someone takes from it, but there's loads of other shows on Netflix that are also ludicrous and also sexist. I feel it's an opportunity for critique of these ideas, rather than a blanket boycott of the whole platform.
That said, I wouldn't want my child to start believing this nonsense when she gets older but it feels like a fad that's on its way out. I don't think it'll be a problem. I'm more concerned about all the other misogynistic messaging that shows no sign of disappearing any time soon.