I don't care for Sakura being a housewife either, but her wearing an apron isnt directly connected to any pairing. She would have been wearing one with whomever she ended up with, Naruto included. Hell I've seen NS fanarts with her wearing one, so considering this it shouldnt be made into a huge issue when that's just the usual thing in this manga. Once the female characters are settled down, this is how Kishi depicts them.
Yeah, I don't get the problem with the apron. Who cares if she wears an apron while she cleans the house? I have big issues with Kishimoto's general treatment and ideas concerning women, not the silly apron.