Halloween Grinch

So like many parents, we took the kids out Trick-or-Treating tonight with some of the kids friends. For the most part the night was a success except for a new phenomenon that seems to be catching on. I call it the "Self Service Bowl". We must of hit 20 to 30 homes before the little ones gave out, of those, about 8 or 9 of them just had a bowl sitting out with a sign that said something like "Help Yourself" or "Happy Halloween". Just one of them, had a sign with "Gone out with the kids, will be back at 7:00. Happy Halloween". This one gets a pass, but the others, no way. Since I was at a loss of words, I named them the Halloween Grinch. What is up with this? Are you too lazy to meet and greet the little ones at the door? If so, take the bowl back inside and turn off your porch light. I don't want your candy.