Pretty dumb thing to say since using 1st overall is a terribly small sample size.
Why is it dumb? I think the sample is large enough to say a forward is a safer pick. Defensemen (and even moreso goalies) simply seem a bit more difficult to project.
But I'm fairly sure the teams drafting are aware of this, will pick accordingly and I don't think it will scare anyone away from picking Seth Jones. They'll still lose out to whoever picks my boy. ;o