I am still not sure if saying and doing is the same thing, specifically in this case when more data means more money for Facebook. And this is not just about Facebook, but to any service that claims they won't log or store my data.
At the end of the day, it's just a claim and I try to minimize harm by giving as less data as possible because once they have it, I am not sure what happens to it and for how long it is retained.
The issue isn't that they aren't honoring requests to delete data. The issue is that they've tied their success and the usefulness of their product strictly to the weakening of user privacy and the necessity to provide them as much such data as possible.
At the end of the day, it's just a claim and I try to minimize harm by giving as less data as possible because once they have it, I am not sure what happens to it and for how long it is retained.