The only way this nonsense is going to stop is through lawsuits against physicians. It is unethical to give hormone therapy or surgery to change ones sex. If there is enough of those lawsuits, malpractice insurance carriers would stop insurance coverage for physicians who do this. That will quickly put this to a halt. Even trans who do not regret transitioning will sue if it means millions of dollars.
There is no guarantee that lawsuits would be resolved as you think they should be. Liberal politics play too big of a role in the courts today.