I don't doubt that such a sea change in public consensus is possible - it happened several years ago with the surge of Chrome in about 2010 [1]. Chrome was markedly quicker than the competition in its day, but I believe that Firefox 57 makes at least as big a performance leap in day-to-day usage over its rivals as Chrome did when it came to prominence. For much of the last ten years, Chrome has been the go-to browser for the tech-saavy user - Firefox is now as well placed as it could ever be to reclaim that crown.
[1] https://commons.wikimedia.org/wiki/File:Browser_usage_share,...