Greediness and heroic race

I love the game, but I feel like they are greedy. For example, in the heroic race, the task that asks for you to collect food doesnt always work. I have researched on why this is, and all I have found is that they put a delay on how often you can complete it in order to encourage people to purchase gems after they become impatient. They are unbelievably greedy for this reason, and I dont know if I will play the game because of this.

Manateez1928 about Dragon City - Breed & Battle!, v4.2.1