In the above he's mentioning that

Privacy features like user-agent reduction, IP reduction, preventing cross- site storage, and fingerprint randomization make it more difficult to distinguish or reidentify individual clients, which is great for privacy, but makes fighting fraud more difficult. This matters to users because making the web more private without providing new APIs to developers could lead to websites adding more:

- sign-in gates to access basic content

- invasive user fingerprinting, which is less transparent to users and more difficult to control

- excessive challenges (SMS verification, captchas)

My question is whether there is any data to back up those claims.