I understand what you are saying, and I largely agree that it's how the medical system controls things in general, but that's true for pretty much any industry. I wouldn't see too much of a conspiracy in people trying to protect whatever they believe in.

Anyway, I don't think the research can have the effect you think it has. Cannabis will be available in the black market regardless of whatever the research ends up saying. Whoever really wants to try to see if it works better for them than conventional medicine/treatment can definitely do so and choose for themselves if it's worth it.

I have consumed quite a decent amount of cannabis myself and have friends who are regular users (this is how I access it, basically). I wouldn't be so quick to dismiss the bad effects of cannabis; they are very real. And the older I get, the more I think that the good part isn't really worth the bad part unless we are talking about some more extreme situations like cancer treatment, tetraplegia, or basically anything where life outcomes are so fucked there is almost no way to make it worse.

It's probably better to avoid it entirely before 25 yo, until the brain is fully stabilized. But that's very much true of alcohol, nicotine, and even most likely caffeine, but they still get used, so whatever, I guess.