I would like to see you try fight a guy with dozens of accounts and millions of generals. You ever fought a 2000 round sea battle? or a 5000 round land battle?
Yes, I have. And quite a lot of fun when ally members are coordinating attacks, so I still see no issue. If someone plays with allowed 11 accounts - you can do the same. But you're not getting someone banned just because you think he is cheating or not playing according to your style.
Try 30 accounts. it's well known,he brags about it.