helicopter parents believe they are getting the benefit of keeping their child safe, and convincing them otherwise is extremely nontrivial. To solve the over anxious parent problem (societally) we have to convince all of them, not just one set.

Gambling, alcoholism, or hard drugs might be a more apt comparison. Quitting obviously reaps huge benefits short and long term and yet we as a society still have not solved these problems by saying "just don't actually".

Once we acknowledge that, it becomes obvious that finding ways to reduce harm is good.