I'm okay with it if there are idiot-proof refueling methods. Admittedly, I haven't looked at small bottle refueling adaptors for a long time, and the last time I looked, there were a lot of warnings about them. Though that was for stuff like filling your 20# tank from your 500 gallon home tank.
If something like the one in Brad's link is safe for idiots, then I guess that works, though people then still have to invest in a 20# tank even if they just use a little camping cylinder once a year. Or more stores will have to setup small bottle refueling stations that their employees will have to run for liability, same as the ones for 20# cylinders, then who knows how much a refill would cost.