Far less damaging to the lungs/liver, especially as the article says much of the increase is via "edible products". Far less addictive than alcohol/tobacco. Far less impairing than alcohol for driving. etc.
Smoking and drinking have been illegal for minors that entire time; this data does not show that prohibition itself has been effective (or ineffective).
Not as well as it could be but certainly better than doing nothing at all. It does create a barrier that otherwise doesn't exist and that barrier does reduce underage drinking and smoking compared to what it otherwise would be even if it doesn't zero it the way we'd ideally hope it would.
I can’t say how easy it is for an underage person to get cigarettes. But I do know how easy it is for them to get weed. I can’t imagine any teenager who wants to smoke or drink being stymied by the law
Do you also think governments forcing schools to teach abstinence is diminishing kids from having sex?
Teaching abstinence doesn't create an actual barrier/obstacle to sex so it's not a fair comparison. I think abstinence only education is stupid and we should teach what's needed to prevent pregnancy rather than doing some sort of moral grandstanding that ruins lives.
Ironically, it would probably be harder for minors to get weed if weed were legal. The fact that it's already illegal leads to people not caring if they sell to minors. They don't give drug dealers additional time in jail for selling to minors for example. If weed were legal for 18+ and you had a strong ID requirement for sale it would be harder for minors to get weed. You have a far smaller illegal market when you have a regulated legal market.