I'm not appointing any responsibility to either side nor am I qualified to do so. I'm just sharing the viewpoint that Soros apparently convinced other investors in private to make certain transactions that affect his own (public and legal) trade, and that that part of his move carries a risk of being labeled market manipulation.
I don't understand your argument here at all unfortunately. Why would private citizens' investment advice be illegal? The entire Reddit community WallStreetBets (not claiming they have sound investment advice, because they don't) should be in jail then, because they effectively say "please invest like we do, because we will both profit".
There is lots of investments based not on the belief of somethings intrinsic value, but on the belief on other investors belief of somethings value. In fact, I would say that the majority of trades happen due to "making investment decisions based on your belief that the value [of X would Y]" as you say. So trades at discrepancies on value beliefs. If this is a good thing or not is debatable, but it is the reality and how would that be related to market manipulation.
I get the distinct feeling that you are trying to say something between the lines but it is hard to know. Can you elaborate on your points?
