While Firefox on mobile is virtually nonexistent, what this post asserts just doesn't look true to me. He's basically asserting that Chrome is where Internet Explorer was in the late 90's, but when I see what browser people are using for presentations, or when I am pair-programming or otherwise able to see directly what people are using, I see Firefox commonly. Outside the U.S., I don't have much visibility, but the StatCounter data (https://www.netmarketshare.com/browser-market-share.aspx?qpr...) which shows Firefox on the increase in the last year, looks a lot more like what I am witnessing.