I should not need extensions for a business to respect my privacy. It's as simple as that.
If you look at it through an equity angle, needing extensions relegates the negative effects to those that are already not "well off" — the technologically illiterate who don't know what to do or know someone who does.
So someone's refusal to make a couple clicks to install an extension necessitates: 1) millions of users having to click to get the annoying popup off their screen, 2) installing an extension to block those anyway, and 3) a more fractured internet where website operators outright refuse to serve content because of liability? I'd bet a very large sum of money that the technologically illiterate don't read anything on those popups and click "Accept all cookies"
How does someone's refusal to install an extension necessitate millions of users having to close the popup? I guess you mean someone as in "vast majority of population"?
Why is the government making efforts to increase technological literacy not an option?
A proper course in technological literacy would also necessarily include the fact that browser extensions are quite possibly not safe.