My son is four and he is getting a play kitchen for Christmas from "Santa."
I have no issues with it and neither do my family or friends; my son loves to do pretend play with household chores like cooking, dishwashing, laundry, vacuuming, sweeping and mopping. Oh, and he also LOVES babies, fuzzy little animals, and horses. Lol, and let me tell you, I certainly don't discourage any of it!