Are you mistaking Taiwan for mainland China? What big issue do you have with "the terrible hukou system" in Taiwan? In Taiwan you can change your hukou location at the drop of a hat. I've done so numerous times - takes about 10 minutes.
In mainland China it's a different situation, where you are married to your hukou and you can't change it without (difficult to obtain) permission. Without it, you can't legally rent/buy a house, hold a job or send your kids to a local school. China also has the concept of a danwei 单位 ("work unit") which holds additional powers to control your life, though possibly it's more relaxed now than it used to be when I was there in the 1990s. Back then, if you wanted to get married or divorced, you needed the danwei's permission.
In the USA, there is no hukou, but in many states failure to report your new residence (for your driver's license) is a criminal offense that carries all sorts of draconian penalties. Sending your kids to a school district that is outside where your driver's license or voter registration (hukou?) lies is a felony.
Could you ever imagine the above happening in Taiwan?