That's why I, like many other doctors, am unimpressed with the proposed legislation, which would legalize marijuana irrespective of any medical condition.

Now if you actually read the linked article, it's clearly a call for the drug's  legalization:

The chief dangers of marijuana, practically, seem to spring from only one of its features: it's illegal. People get beat up, shot up and locked up because of the great amount of money that rides on selling the stuff, stuff that would be about as expensive as lettuce if it weren't against the law. I have treated people seriously hurt by the illegality of pot.

...  I also feel pretty strongly that nearly every child should study Latin—really—but I don't think we should lock them up if they don't.

Hanging around with all sorts of big dope-smokers for the same 35 years I should have bumped into at least one or two with those "serious health effects". The fact is I haven't.

But when you try to change certain things by force, things close to the core about what folks love and hate, about their personalities, you just run into trouble. It doesn't work. You might knock down but you will never build up. This is why the government is better off out of the marijuana business.