Has anyone actually reviewed the code changes to that wallet?
Unless the rebel group have many billions of Dollars they will only be able to artificially support BCC/BCH for so long. Just dont sell BCC/BCH to them too low. Sell it higher to drain their funds quicker and dont place buy orders.
The coin will be dumped to the ground.
yobit listed BITCOIN CASH before even the fork happen and give their users the same amount they hold in BTC, how is that possible?
Fake Bitcoin, fake balances.

Why are you even surprised? Centralized services can put up any number as your balance.
Is this the coin Jihan premining?
No. That was the original "UAHF", but it was abandoned by Jihan and Bitmain. BCH has near zero mining support.