RE: https://social.edps.europa.eu/@EDPS/117568937323795939

The European Court of Human Rights has previously & correctly stated that even the mere storing of data relating to the private life of an individual amounts to an interference within the meaning of Article 8 (see Leander v. Sweden, 26 March 1987, § 48, Series A no. 116). Which means an agency needs a good reason to store any data, and the more it stores it the better the reason has to be. Proportionality.