I'm 30 minutes to Seoul by public transport, literally don't need a car because everything is walkable, and there are many things to do (way more than the Washington DC suburb I grew up in). I didn't even know Ilsan was a planned city until I was told so.
And isn't every city "planned" in some sense via zoning laws and such? Is Stuyvesant Town in Manhattan not a "planned" community?
I've never seen an apartment with a daily loudspeaker announcement that can't be turned off, that's ridiculous and in no way a norm in South Korea.
I much prefer the planned cities I've lived in here in Korea to the drab lifeless suburbs in America where you can't do anything without a car and the commercial areas are just giant chain stores/restaurants.