It's been known for 14 years that sharing this data might help some pages. But it was only last year that it became clear that it would provide big wins in a co

It's been known for 14 years that sharing this data might help some pages. But it was only last year that it became clear that it would provide big wins in a compelling use case (i.e. for AdBlock Plus users). See https://bugzilla.mozilla.org/show_bug.cgi?id=988266#c8 https://bugzilla.mozilla.org/show_bug.cgi?id=988266#c8 And then it took another 15 months to get fixed because it was a significant and complicated change.