Wikipedia: "The service may use tracking pixels, web beacons, browser fingerprinting, and/or device fingerprinting on users." Seriously? What for? People inve

Wikipedia: "The service may use tracking pixels, web beacons, browser fingerprinting, and/or device fingerprinting on users." Seriously? What for? People invest their time to provide free content and as a reward they are getting behavior typical for privacy invasive corpo from California?