"In contrast, even though you keep insisting otherwise, Security Keys don't give "escalating amounts of personal information to tech companies" but instead no information at all, just that useful answer to the question, "Are you still you?"."

No, I am responding to the above assertion that I have insisted security keys give esacalating amounts of personal information to "tech" companies.

This is incorrect. Most users do not have physical security tokens. But "tech" companies promote authentication without using physical tokens: 2FA using a mobile number.

What I am "insisting" is that "two-factor authentication" as promoted by tech campanies ("give us your mobile number because ...") has resulted in giving increasing amounts of personal information to tech companies. It has been misused; Facebook and Twitter were both caught using phone numbers for advertising purposes. There was recently a massive leak of something like 550 million Facebook accounts, many including telephone numbers. How many of those numbers were submitted to Facebook under the belief they were needed for "authentication" and "security". I am also suggesting that this "multi-factor authentication" could potentially increase to more than two factors. Thus, users would be giving increasing amounts of personal information to "tech" companies "for the purposes of authentication". That creates additional risk and, as we have seen, the information has in fact been misused. This is not an idea I came up with; others have stated it publicly.