seems like this case is another argument for requiring all pot users be registered.
Not at all. I want gov out of it entirely. If people grow mj, poppies or brew their own liquor, it should not be under the gov’s purview, unless states want to make it such. It’s a state business, not fedgov. But selling, IMHO, should be a serverely punishable offense; and again - a state issue, not fedgov.