I'll be convinced web browsers have regained their independence when they start including blockers for modal interfaces, which have replaced the pop-up as the preferred method of hijacking the user's attention.
(Yes there is some Apple webkit in between)
https://github.com/pkgdemon/ladybird/issues/1
https://old.reddit.com/r/gnustep/comments/1q0pdd6/ladybird_p...