Were small apartments of yesteryear more generous with their kitchen sizes?
The parent comment said kitchens are getting smaller and smaller but I'm not sure if that's actually true. I lived in quite a few houses (middle / lower-middle class) growing up and it seemed like the older homes all had much smaller kitchens than the ones that weren't as old.
Maybe that is happening for apartments for singles and DINKs living in urban areas where your lifestyle may be shifting towards eating at restaurants more than at home, but especially for families with kids, the trend definitely seems to be larger kitchens and kitchens that are more integrated into the home.