With the you get paid the price of the bitcoin with the segwit update when it goes live 28 of december.
More info you could find here: http://b2x-segwit.io/
Its a big gamble, but you could potentially get more than 15k for each bt2 future. I do this with a really small percentage of my stack, like 2%. Funds I can miss.
He's just FUDing to accumulate cheap B2X (With a 4xarbitrage)
If you read this page you can understand that it's crystal clear that BT2 on Bitfinex is B2X, They even say the B2X pair on the official page.
"Users will be able to create or destroy these new CSTs in any amount using the Token Manager located in the Order Type drop down menu of the sidebar order ticket. Upon creation, the BTC will be debited from your account and an equivalent amount of BT1 and BT2 will be credited. Users will also be able to reverse this process at any time, trading in equal numbers of BT1 and BT2 to extract BTC"
"CSTs will provide a pricing continuity through the Chain Split Event and, in particular, the order books for the BT2 trading pairs will become the order books for the B2X pairs."
It's not from me, but straight from the official bitfinex website.