No one is not taking it seriously.
Sadly, now we have the situation like the bad old days where trans kids are trying anything else. Hell, even before all this when PBs were just being heavily gatekept, I had a conversation with a young trans woman who told me how she managed to DIY for years during her mid-teens.
Puberty blockers were the compromise, sadly Streeting and his ilk are more interested in engaging in cruelty to bolster his diet Reform image than what's best for young people.