The information won't actually disappear. That is just not how information and markets work. The information will still be kept by legitimate archivists. If it

The information won't actually disappear. That is just not how information and markets work. The information will still be kept by legitimate archivists. If it can be kept by them it can be kept by governments. It can be kept by blackmailers It can be kept by accidents in old backups. There will be someone selling this information. This just hides the issue while creating a massive tool for future censorship and new black market. Any reasonable person will look back 10 years and see that the person posting stupid stuff on Facebook while drunk has cleaned up their act. Forcing the information to be hidden doesn't help, it just hides that you might be dealing with unreasonable people even if you would rather not.