Why are Healers allowed to be insanely overpowered?

[Assirra]

Its funny that the solution to fighting 3 healers is run away.

Did you miss the second part of that post?
Also its called picking the battles you can win. strategy, tactics, that kind of stuff.
Btw, you can win against 3 healers, but it does require some coordination and working together. If you are to incompetent for that, yes run away.