Biden was calling it a gateway drug just before entering the office of president. I don't believe he's evolved personally at all. Policy, which is kind of weak, may be another thing. But I don't think the man sees any value in marijuana, for anybody.
But that's just the point. Part of marijuana adoption is getting away from worse drugs. There is plenty of supporting data at this point. The sooner people see this they'll see where the bar ought to be set. This is only one example of course.
One of the best ways to get through withdrawal symptoms is Marijuana. When I was getting off some pretty rough mental meds, Marijuana allowed me to keep going.
Yeah at best Biden probably only is in favor of it for textile products and maybe CBD derivatives for medical use. Which mind you is still a massive improvement over damned near every president since it was putlawed but still a woefully insufficient, a solid summary of Biden now that I think about it.