Most people involved in it are aware at some level that this is at best suspect and at worst a deception designed to push legalization. Same as the “health benefits of marijuana” crowd who violently deny the risks, addictive nature, potential to induce schizophrenia (temporary or permanent), tendency to make people lazy and obese, etc.
Legalization has never been a question of “is this good for people?”
Plot twist, I'm for full legalization.