So what? Even if he is, how is that harming you or society in any way? Is this where we have arrived? Society gets to decide we must suffer our cancer without even a few hours of distraction. You are a real gem.
If the proponents of Doper Nation weren't using medical marijuana as a stalking horse to legitimize all marijuana use, then terminally ill people who wanted to use it for pleasure would have a much better chance of doing it without getting caught or prosecuted.