I doubt that freezing a body will produce anything but a well preserved corpse at some future date. However, assuming it might be possible to reanimate these frozen bodies in the future, why would anyone want to or be willing to pay the cost of the process? These defrosted people would be totally ignorant of life in the new times, have no particular knowledge or skills of value in the new society and would be little more than interesting research for historians. Imagine if someone from the 1600s were revived today. Would they be able to cope with living in the 21st Century? Even a revived Shakespear or Galileo would be little more than curiosities.
Also consider the person being revived. Everyone they ever knew would be dead and even if they had far distant descendants would those descendants even care about a 15th generation removed relative being back?
I wish we could bring Ben Franklin back. I’d like to give him a tour. I bet he would adapt quite well. And I’d teach him how to use a smartphone. :)
(But I understand what you are saying.)