It's entirely possible, and I would say probable, that this gentleman's wife prefers to do the supermarket shop on her own. I know I do, and if my partner drove me to the supermarket and then did something as creative as this while I shopped, I'd be absolutely delighted.
I would also bet that she often puts her feet up while he fixes the drains, empties the bins, mows the lawn or does any other type of housework that they as a couple have decided are his remit (while he's not at work earning their money of course... they sound like a 'traditional' couple in that respect so I'm making another guess here...)
Perhaps you could try to be less bitter, judgmental and (yes...) sexist, and not leap to the very worst conclusion whenever you read a story about a man.