Did you talk to anyone about your plans before you brought in the demo or let them know they were solved problems? Often these sorts of reactions come down to your boss not wanting their team to lose their jobs because of the perception that it can all be handled by one person who's happy to work weekends.
Again, and I can’t emphasize this enough, for a Django CRUD app. It was a 4 person-week project turned into a major ordeal. No one should have lost their job; they should have been put to work doing the thousand other more productive things they could’ve been doing instead.