Poloniex scam accusations go back to 2015 when they implemented KYC and many customer move to Bittrex, since then Poloniex started to became a bad exchange, many outages and problem with liquidations, then they delisted a bunch of coins and never list some of the new shitcoin, now they are moving to Asia, if Poloniex continue with their KYC problem no customers will contienue use that exchange, i think Poloniex will never recover of the bad reputation that has