Even Sweden, one of the most left-leaning governments in the EU knows that transitioning at a too early age is harmful to kids

Well... Sweden was also mocked by the misleadia for sticking with natural immunity...

A study from the UK's National Institute for Health and Care Excellence reviews the negative effects of puberty blockers which is what the Swedish National Board of Health cites for their decision to restrict the use of puberty blockers: https://segm.org/NICE_gender_medicine_systematic_review_finds_poor_quality_evidence

A lot of people really don't understand that puberty blockers are used in cis kids

So you think maybe kids who are diagnosed as 'trans' are actually misdiagnosed and they not trans they are just non-gender role conforming cis kids who are tomboys or femboys that people inaccurately assume are trans?

No, puberty blockers are used in kids who are completely cis when puberty starts too early.

What are you talking about? Sounds like you are making something up. Aren't puberty blockers given to kids who feel like they're the opposite gender and are diagnosed with gender disphoria supposedly? And given puberty blockers and hormones replacement therapy to prevent them from developing a body that correlates with their biological sex and instead developing thst correlates with their gender identity? You sound like you're suggesting puberty blockers are given to cis kids who don't actually feel like transitioning and even if a kid does genuinely feel like transitioning that still doesn't change the fact that puberty blockers and HRT does have harmful effects. Also, are you actually admitting that puberty blockers do have harmful effects when given at a too early age? Because that's simply what Republicans and the Swedish government are doing, trying to protect kids from doing something they shouldn't be doing at a too early age. We don't allow minors to consume tobacco or alcohol at an early age for it can cause developmental problems, we don't allow people to legally consent to sex until they reach a certain age, it's only fair we apply the same to a life changing decision such as transitioning which can also cause developmental problems when done at a too early age.

I am saying that kids who don't want to transition use use puberty blockers if puberty starts too early for their body to handle it and have been for 30 years. so banning them also would harm them.
and it has been proven that kids who get gender affirming care at a young age do benefit from it, and it has been proven that the rate of regretting transition is insanely low (between 0.2% and 2%)
Although I do not know much about the health effects caused by it I know that it is beneficial to mental health of children to transition so banning them for a reason other than health effects is just transphobic, not "saving the children".

But the thing is, there isn't enough evidence to back the notion that puberty blockers benefit the mental health of children, a study from the British Medical Journal shows that puberty blockers don't alleviate negative thoughts in children with gender disphoria: https://www.bmj.com/content/372/bmj.n356

A study from the UK's National Institute for Healthcare and Excellence reviews the negative effects of puberty blockers and also finds that the use of puberty blockers is not backed by strong science, it is also what the Swedish national board of health is citing for their restrictions on puberty blockers: https://segm.org/NICE_gender_medicine_systematic_review_finds_poor_quality_evidence

There isn't enough solid evidence to back the transitioning of children, there is evidence that shows that puberty blockers have negative effects and that puberty blockers don't really have a lot of benefits to children, people have legitimate reasons to address these issues and protect kids from such harmful effects and we shouldn't dismiss them as 'transphobic' when they do have legitimate concerns.

Of course puberty blockers don't benefit mental health, it's the transitioning that does.

https://abcnews.go.com/Health/gender-affirming-care-trans-youth-improves-mental-health/story?id=96510337

https://whatweknow.inequality.cornell.edu/topics/lgbt-equality/what-does-the-scholarly-research-say-about-the-well-being-of-transgender-people/

it has been proven again and again transition benefits the mental health of trans people, and yet you use the part that isn't even supposed as proof it doesn't.

Well, I want as many females as we can get from that part of the world.