Similar to the previous answer. What tactic should be used to kill all the Barbarian troops with a single Pegasus because they have no creatures, and the Pegasus can do it faster?
If you can't position seven Goblins to attack such a hero, then that's the player's problem, and "YES," they deserve such a defeat.
However, this is already a clear off-topic discussion. But I strongly disagree with that point.