How is netflix's data not personally identifiable? They are tracking your watch pattern to suggest you new viewings. So their stat is connected to the user even

How is netflix's data not personally identifiable? They are tracking your watch pattern to suggest you new viewings. So their stat is connected to the user even if it's not accessible by most employees but it might be. So someone could have written an anonymized query to run this or a query with the names than the final output just containing the number. Ideally netflix is for the most providing employees/systems with anonymized analysis. Definitely there's always a question of what kind of direct access employees have of sensitive data and I will agree that is a general question even without this tweet.