This. You can have good urban planning anywhere, if you agree on laws and enforce them. The reason why urban planning is worse in Poland than it used to be is

This. You can have good urban planning anywhere, if you agree on laws and enforce them. The reason why urban planning is worse in Poland than it used to be is because there was no focus on zoning laws and planning was neglected for many years. Mind you, this is not accidental in any way: there was (and is) a concerted effort to prevent new zoning laws, or at least delay them as much as possible.