I believe one of the biggest problems with Smash Crystals is the imbalance within them. For example, Zombie's is very easy to avoid and given little advantage to the player, whereas Enderman's or Skeletal Horse's is extremely powerful and almost guarantees death for the opponent. I understand why players get annoyed by them. Even if you out-class your opponent in skill you can lose to the smash which can be frustrating. I often ask players if they don't mind skipping the Smash Crystal and continuing with the game normally. If someone should choose to use it, which I also admit I have from time to time, it's just part of the game. It is a part of the game for a reason and should people use it, we can't really complain.