The article doesn't really go into the scientific questions remaining, chief among them (IMHO) being the effect of weed on driving ability. There are some studies that suggest it's comparable to being drunk, but the evidence is still weak, and most people I know who do these sorts of things are oblivious or dismissive to it.
No doubt, if you live somewhere with it legalized, your insurance will go up. And there is no breathalyzer equivalent, so it is hard to prove someone is impaired.
The idea that kids eating edibles ‘may not pose a risk to them’ is absurd. It’s not something I’d want kids exposed to.
With the WHO recommending rescheduling, maybe research can finally happen at a normal pace.