its their hot wallet, and they are just lazy, glad ill dont have hash, but intend to reinvest after the fork a little BIT, not more then 1/3 capital ,... by the way will they support BTC gold like BCH?
I would be surprised if they support Bitcoin Gold. Bitcoin Gold is basically trying to flip the bird to Bitmain.
I don't believe they will either. BCC was a fork with a 'minor' tweak, which Bitmain would have loved to see implemented in the BTC; they supported the BCC, and are even mining them themselves. Bitcoin Gold however, is a totally different story for them...

this was in my messages on Hashnest today:
Hashnest policy about BTG hardfork
1. Hashnest will make a snap shot of your BTC wallet balance at beijing time 2017/10/24 24:00 and we'll provide 1:1 BTG to you as the snap shot;
2. If the BTG is not running stable, or with high security risk, we'll discard BTG;
3. If BTG is running stable and secure, Hashnest will deliver the BTG as 1:1 to your wallet and will let you the withdraw time in another notice.
Hashnest
2017/10/24