From the start this was advertised as Luckycoin restarted at block XXXXX because the chain had essentially been mined by one person for the majority of the last decade, correct? So why after someone on twitter discovered they were able to sync the longer chain did all exchanges freeze deposits and blame some replay attack? The exchanges are older than the fork, there is no risk to them. They just stopped deposits, crashed the market and are killing this coin because they didn't research what they were listing?
There doesn't even seem to be a replay attack just a few transactions that coins be rebroadcast from old wallets. From our perspective, there is some coordination to only let certain people sell this coin.