Yes yes, thats the idea behind it ! :-))
Every minion who got food will tell a friend about this great deal (food vs. junk) and come back next day.
But this can an opportunity for the colony as well, since they drop a random item, it could be a stone chunk, some steel/uranium, armor or weapon.
Yep, it could cause some lag, or even run out of memory, when there comes a hugh amount of minions at the map.
And i hope the colony got a saferetreat if 1024 minions get angry if they don't got food.