Each state varies only so much in what the federal government and federal courts allow. California could turn into Florida the second Republicans take control over the three branches of government if/when they win in 2024. Unless something absolutely bonkers happens, this isn't on the table for the UK. The Tories are gone by late 2024/early 2025 and the anti-trans movement doesn't have nearly as much steam as it does in the US. Trans people (along with everyone with ovaries and regular gay/lesbians) in the US should be gearing up for some very tough, very scary times no matter where they are, even those in California. The UK may be worse than California right now for trans people, but the future could be brighter because Labour should be much more supportive of trans people, and that should last five years which will probably be enough time for the anti-trans movement to dwindle considerably. The US has already seen how much damage 4 years of Trump and only 2 years of a Republican controlled federal government can do to the US, and that was before the anti-trans movement kicked it into high gear. I think there's a case where the UK looks even better than California from a trans perspective, especially in the near future. But all this only matters to trans people who can afford to pack up their lives and seek out the most accepting places whenever a new extreme reactionary act gets into power.