the messed up thing is some investors could have sold at loss listening to him, and will just be pissed to see this in the 1000s,
just make your own mind up. why would CGA devs who have been praised as talented and trustworthy by mods on poloniex help crypto_advisor who is trusted to build the coin. if you trust CGA, no reason not to trust yinyang.
at the end of the day its your coins, just be logical about your decision. no one makes a new account to tell someone a coin is a scam. he made a new account as when he is proved wrong when price is rocketing, he can go back to using his other account.