Everything that is happening here is a reflection of the Steem Blockchain code.
We need to make a difference between everyone who ninja mined (including many current TOP 20 witnesse - Hypocrisy intensified), an investor who bought a large amount of stack, and anyone who benefited from the status quo then was suddenly enlighted when he realized that his position is threatened.
But why it should be wiped out exactly? is there a rule or a written statement against it? Some projects go with the ninja mine to reserve a portion of the token to finance the development of the chain and pay the shareholders. Would that be a problem if the amount was small? Is Satoshi Nakamoto getting the first 50 Bitcoin considered as ninja mine?
Ethics don't have a place here since we all come from different cultures, hence why the filed should be leveled for fair play.
Apart from a small bump in price. There is no difference between Tron buying the stake from the market or STINC.