Remember when popup windows were a thing? Originally a feature for pages to show alerts or confirmations, naively implemented when the web was a less hostile place. Then sites started abusing them for their own gain, and browsers started shipping popup blockers as a feature.

Sites that are "well behaved" with ads are fine to me. The problem is too many abuse the css/js capabilities of the browser to make a result similar to the popup problems of yore. The only sane solution from a consumer point of view is block by default and whitelist the good places.