Isn’t the whole point that you can stop them from collecting your data and also get them to delete your data if you want? Presumably you could get Google to delete all of your data. Is this not the case?
But also partly deletion and opt-out also of course, and that probably works well, for those who use it. But with the huge implementation cost (cited by PwC as upwards of 150 billion USD in the U.S alone [0]), I wonder what the price per delete request or opt-out is.
[0]: https://truthonthemarket.com/2019/05/24/gdpr-after-one-year-...