Where’s the proof though? It’s easy to say you’ve deleted data.
What’s more, 3rd parties could have had access to the data, even if only to provide the service, and that’s just another party you’re blindly trusting.
The cat is long since out the bag. The sooner we make raw data freely available to everyone the better - that’s certainly a more realistic hope than controlling data access or even getting businesses to pay people for the data they steal from them.