And that doesn't sound unreasonable to you?
You can't expect that, honestly.
Theres no use for production buildings at least after bronze age (a vast majority of users). Its more efficient to do quest for supplies than production buildings, even my HC gives me millions supply per day that production cannot. Its just a way to annoy players, force them to make less efficient city for an event. That's the unreasonable part, I shouldn't have to destroy half my city to have 12+ supply buildings of my age.
The game evolves, the quests should reflect that. What I really liked about st paddies event was that there were tasks done in the game itself, why not for all events? Light 3 candles, pick 3 presents, find 1 calendar key, find 1 part of master key, complete one set of lit houses, ext.