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and what does stop them from using backups with unchanged data anyways? At least for internal/statistical purposes.

• notnap 6y ago
  The goal is to prevent public profile with your real data first. If they publish backup of your profile it would be next level violation of trust
• sulam 6y ago
  If they are _determined_ to use your data, they will have backed up before they announced this and saved it off somewhere. Normal backup mechanisms won't get the job done, though, because they typically age out. GDPR and CCPA both require backups to explicitly not allow for restoration, although of course they could ignore both.
• EmilioMartinez 6y ago
  Nothing if they take the trouble to make it work. This is just stocastic damage control, reducing somewhat the likelyhood of your real info being used, and there are many reasons why it probably works.