I personally don't think anyone should be charged for this, that's in response to how you related this to Jp Morgan traders.
This is a free market, it's not to be compared to a centralized one. Though the demerits are clear, it's rather is a technic to acquire bigger stakes or claim larger positions.
This is what differentiates the cryptocurrency market from the rest, I'd say I prefer the Hive Engine structure to public markets like Binance. On Hive engine you can choose whatever price you want but on markets like Binance, there's a limit one can set on spot trade, that sucks, doesn't really define a free market.
I see nothing wrong with a regular guy tryna outplay the rest.
RE: How to Manipulate the DEC Market 101