These magazines, of course, are out to reassure us. But not totally. We can be happy, popular and relaxed like the people toasting each other around the groaning board, but it might take some purchasing. Coincidentally, the purchasing of just those products depicted in the advertisements is often just pages away.
The people, houses, kitchens in these scenes are always just a socio-economic notch above the readership demographic. (Otherwise, Architectural Digest's readership would be stuck at 1,500 stockbrokers and movie stars.) So, unlike the message of literature, the message of the magazines is that the unhappy dinner party is curable by careful applied poultices of consumerism.