I find it hard to believe that anyone could still think it was a bluff, especially in France. I think those French were just frightened and grabbing at staws.
Seems like everyone in the western media is grasping at straws as a means of avoiding war. Hitler knows full well the Poles will not give in to his demands, but perhaps by getting British and French support he can split the alliance. Not a bad strategy, even if it didn’t work.
But back to the original point; the western allies have no stomach for a fight. It’s pretty obvious. It will become much more obvious over the next six weeks.