I have always enjoyed the irony of holding a freedom celebration and giving out free beer to starving peasants. Where did all that beer come from?
Which, I suppose you have to assume the size of it is related to your unit size (more troops=more peasants=more impact), so I suppose it isn't a granary's worth of beer. The same idea would apply to this idea. How ever many peasants your unit can safely deal with is how many get goodies.
It's not the basic idea that I have a problem with. It's the magnitude. Telling 5,000 people to split 5 tons of food is a great thing. Telling those same 5,000 people to split a Twinkie isn't going to get you very far.
A bushel of food seems to feed 500 people for a day (at least from what I see on one of my Colonies character, the other two I can't check). That seems like a feasible sized handout. If that were used at half-rations, that's a thousand peasants. If 5 or 6 units dump food on a small depopulated region, it could feasibly be brought out of starvation temporarily.
The more I think about it, the more I like it. Giving more tools to stave off regions being nuked by starvation helps the players. It isn't a handout to players, but a way to use in-game mechanics on other in-game mechanics that makes sense.