>Mozilla gave up on the browser years ago, let's be honest.

They push million lines of new code every year, push thousands of patches, and regularly achieve performance measurable performance boosts to Webrender, the JavaScript and CSS rendering engines, on rapid release cycles that have improved speed and memory usage.

There are a lot of criticisms leveled at Mozilla some fair some unfair, but the amount of work poured into the browser is so extensively documented that there's no excuse for not knowing.