Originally Posted by
LTN Phobia
For all we know, he might have been a Premier and might genuinely not have known how to get from CW to F because he'd never flown in CW due to always flying F. Or he may usually fly on a private jet so he might have been confused about the cabin layout.
Hard as it may be to fathom, anything is possible.
And wild speculation is fun.

He may well have been a Premier as they don't have to be regular travellers in premium cabins just control the travel budget for a major corporation. However as we don't have the full facts it is fairly difficult to come up with an accurate reason.