Britney Nguyen. Ex-Twitter engineer says he quit years ago after refusing to help sell identifiable user data, worries Elon Musk will 'do far worse things with data'. November 2022. URL: https://www.businessinsider.com/former-twitter-engineer-worried-how-elon-musk-treat-user-data-2022-11 (visited on 2023-12-10).
This article describes an engineer at twitter (now X) who quit after voicing concerns of unethical data collection. I wanted to see if there was any ethics principles that would support data collection in unethical ways, and I couldn't find any that would except maybe Kantian, but even then I found that they would at best be neutral.