I would think that the technology for cryo freezing people would have been newish by 1999, so there probably aren’t too many people from before then who woke up in 3000. There may have been a few people who froze and unfroze around the same time, so he may not be THE oldest, but I think that he’s the oldest person in the series
There are/were still people being thawed out, so i assume there’s older people in cryo tubes. It’d be hilarious if theyd pull Walt Disney out of one