Permanent measures should be taken very, very seriously and there should be thorough investigation into long term outcomes. This is not at all what the Republicans care about. They aren't doing this because they care about the health of vulnerable kids. They just don't like trans people.
No "thorough investigation" is being done in the US. European countries have halted this treatment because of a paucity of data and evidence of poor outcomes. But the US just ploughs ahead regardless - perhaps a symptom of its for-profit health care system, each transed kid is worth many $$$ in lifetime treatment. So for legislatures to ban this, is the only reasonable path forward to save kids from this type of medical abuse.