StayFocusd is a popular Chrome extension (500k+ users) to block distracting websites, users got the message that a company Sensor Tower is the new owner. There is also a new privacy statement [0] in which the new owner announces to collect a lot of "anonymized" data.

Judging on the reviews this has already lead to some users uninstalling the extension and giving bad reviews.

[0] https://sensortower.com/page-stayfocusd-privacy