Yeah it's coming from above-lol
But I fully agree with him . I've been saying for years that it's a total waste of resources to prosecute this particular "controlled substance".
It could be socially regulated like alcohol. you can't come back from lunch at work reeking of booze-you can't stroll through the streets/parks with open containers-you can't operate machinery while under the influence. Marijuana could fall under these same rules.
As far as sales...a since able limit could be set to differentiate between person and commercial use. How many users would choose to grow their own? Not many I'm sure, so there would be a large tax base to tap into.
And no I don't see this as a "slippery slope" issue. No more than alcohol