I'd actually argue that he was referring to recreational use when he was discussing his kids smoking it, based off this quote:
"Much in the same way I wouldn't let my own children drink alcohol, I wouldn't permit marijuana until they are adults. If they are adamant about trying marijuana, I will urge them to wait until they're in their mid-20s when their brains are fully developed."
I'm assuming he's not referring to them medically smoking marijuana because he talks about a more appropriate age to start, implying that they'd be smoking it voluntarily rather than under necessity from chronic pain.
"Much in the same way I wouldn't let my own children drink alcohol, I wouldn't permit marijuana until they are adults. If they are adamant about trying marijuana, I will urge them to wait until they're in their mid-20s when their brains are fully developed."
I'm assuming he's not referring to them medically smoking marijuana because he talks about a more appropriate age to start, implying that they'd be smoking it voluntarily rather than under necessity from chronic pain.