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It's not as easy as that. There are numerous laws that govern how companies are supposed to treat your data and the purposes why they store it. Ledger is based in France. They are required to comply with EU data protection laws. On top of that, there are also various French laws that the company must respect. One of those concerns taxes, accounting, invoicing, and the like. I think that particular law requires French companies to keep customer data for up to 10 years. So even if your personal data that they keep for other purposes can be deleted, the tax & accounting law requires domestic companies to keep your data for a very long time.
Thanks for the explanation
Here in Brazil, the government has a law called the “General Data Protection Law,” which stipulates that companies must define how long they will store customer data, but there is no definition of a minimum or maximum time frame

In short, it doesn't work at all, because companies store customer data practically forever
And when there is a data leak, no customer is compensated
Nowadays, these customer data storage laws (in general) are quite outdated, with so many risks out there, especially in companies linked to crypto, investments, banks, etc