If doctors are only allowed to parrot whatever the current narrative is, why even have them? This is such a dangerous road to go down, the US will tear itself in two if things don't change course.
Pass the popcorn.
What is the great fear here? That people will keep going to doctors that actively kill them? Do you believe the general public is just too ill informed to know if their doctor is helping or not? Would a doctor who consistently gives bad medical advice and has bad patient outcomes continue to get patients? Is the risk of that happening worth handing over medical decisions to legislators who have no medical training?
At the benefit of great leeway, it’s highly unlikely that what you’re saying is realistically possible.
There is a wide range of skill, and the “Science” is a moving goal post.
Additionally, the bill and lobbyists can dictate what passes as “legal or illegal” without medical knowledge, training, or history of practice in the profession or industry. This is an attack vector to corruption.