That's going away. We are seeing reduced deprecations of crypto algorithms over time AFAICT. The mathematical foundations are becoming better understood and the implementations' assurance levels are improving too. I think we are going up the bathtub curb here.

The value of said data diminishes with time too. You can totally do an off-site cloud backup with mitigation fallbacks should another country become unfriendly. Hell, shard them such that you need n-of-m backups to reconstruct and host each node in a different jurisdiction.

Not that South Korea couldn't have Samsung's Joyent acquisition handle it.