It common sense - if you're assigned to be a merit source to a particular board you're expected to give 90% of your allocated source to that board doing something otherwise is unethical.
The punishment is your allocation will be decreased/ not increased overtime- theymos sees everything.. I give my Smerits merits to any board of my choice but my source allocation stays here.
So what CryptopreneurBrainboss is doing is unethical? But we see it as ethical. I think we should see the reason for something before it can be called unethical.