Originally Posted by
419er
UA does the same thing, and still has the hole if the BP is cardstock. If the BP is on chickin toilet paper, you have to tear the hole yourself.
On BA, the cabin staff tears a small hole to attach the cardstock BP to the hanger (at least on my last two longhaul flights) . They do seem to be careful not to tear near the barcode, as that is what the dragons will scan at the lounge entrance.