OMG, i wasn't going to do stupid any more. I read the whole paper. If you have a very crude measurement of temperature, then we are at the warmest in 10,000 years. That's because you can't see the other warming periods. 10,000 years ago we had kilometres of ice on this.
Anyway, the samples were taken in 2013 when the Arctic was warm. Not now.
I think I'll deep-breathe for a while.