I'm convinced that a decade or two from now we are going to look back on social media exactly like we see the tobacco industry today. The companies knew what they were selling, knew the harm, but put profit over public good.
Same with oil companies.
Of course there are many entities doing bad things, but few have such a dramatic impact on all of civilization.
I bet this case would never have been brought if Facebook had a "This product is addictive" warning every time you open the app.
In the sense that the downsides are documented in the relevant scientific literature, sure. But popular perception of those downsides is very different. A whole lot of people think those downsides are a pack of lies: that cannabis isn't habit forming, that it doesn't make the average user lazy and complacent, that it doesn't increase the risk of schizophrenia, that driving under the influence of it isn't unsafe and is probably even safer, etc. The downsides are all "DARE lies" according to many of the people who think legalizing cannabis is worth it, who weighed the harms of criminalization against 'cannabis is literally harmless.'
(FWIW I voted to legalize it in Washington in 2012.)
People recognize that cannabis is habit forming, it's just not as physically addictive as the things we label "dangerous addictive drugs." Most people are addicted to caffeine and we generally accept that it's fine. In the same way that moderate drinking for almost everyone doesn't turn into alcoholism it's the same for cannabis. In contrast everyone who smokes nicotine with any regularity at all will become addicted to it.
"average user lazy and complacent" -- That's like why we're here man.
I don't know a single person who thinks it's fine to drive while high, I do know some stoners whose tolerance for "sober enough to drive" is suspect but that happens when we hit the bars too.
I think you're applying the word harmless to a degree that no one else does and then are arguing against that. Like that cheeseburger increases your risk of heart disease but no one's out here being like "cheeseburgers considered harmful."
You say that, but there's a lot of people who flat out deny it. You're saying that everybody knows this, but that isn't true. Same thing with the driving under the influence thing. A lot of people have told me that they drive safer when high because it heightens their senses and slows their roll and makes them paranoid and therefore careful, and a whole lot of cope like that invented to excuse themselves for doing it.
The downsides of cannabis that you claim everybody understands and recognizes are in fact flat out denied by many people.
Historically, though, most doomsayers are proven wrong. Let's hope we are too.