This topic is self-moderated in order to be wiped out completely on December 31th due to ban prevention reasons before a mixer blackout on the forum.
I don't think that Whirlwind was an exit scam, they simply stopped operating because they didn't profit as much as they expected.
As far as we know nobody lost any money there and people received refunds from escrowed funds, so more correct status would be CLOSED.
However, I have to say that is sucks how they stopped operating without an explanation.