Multi-boxing software is a key or key translation repeater. There is no automation. That is the reason that Blizzard has not banned boxing software.
Multi-boxers make up a small portion of the population. The relative income for Blizzard is small.
I have to agree with your sarcasm. The one-trick pony is definitely an advantage. Please try multi-boxing so that you can understand their weaknesses. Multi-boxing is not a “god” mode.