It's actually not legal to freeze someone who's still alive, because the freezing process is decidedly lethal. They have to replace your blood to try and minimize cell damage from ice crystals and so on. Then there's the "budget" option where they just chop off your head and freeze that rather than mess with your whole body, for people with a very specific level of magitech in mind for their resurrection.

Now, there is a time in history where we got good enough at resurrection that they legally redefined death. In like the 70s they changed the definition of legally dead from having your heart stop to a cessation of brain activity because we got really good at restarting people's hearts. But it's a weirdly specific leap from "we can restart your heart" to "we can reconstruct you from just a head in a way that will have a meaningful and tangible connection to your current life", but not all the way to "we can reconstruct you ex nihilo by retracing the quantum echoes your life created in the Force or whatever".