You have it backwards.
I would be more offended if he said it the other way around(said "smoke pot" 1st).
You're trying to interpret it this way:
"I'm not advocating everyone to smoke pot and go out and run around with no clothes on."
Implicating the plant as the 'active ingredient' to make people run wild. That would be detrimental to decriminalization, IF he said that but he didn't.
You do have to understand he has to get the media to like his positions, in order to get more constituents to hear him, a 'slow libertarian'(as Foodforfreedom said).