Honestly I just see all this, even despite the author claiming taking time to "mull it over", as a knee-jerk reaction. There is little evidence that MS changing to Blink/V8 will have any tangible impact on the web. Microsoft has hardly offered much as far as competition and diversity goes since IE6, basically the only web "innovations" they're responsible for is a bunch of IE-specific APIs that didn't work in any oth…
This is a terrible and fatal result for the web as we know it. Because why would we continue the practice of creating baroque, power-inefficient web frontends with JavaScript and the browser stack monstrosity when we're essentially targetting a single browser? We could as well use a much leaner and lighter GUI framework designed for the purpose, and a saner language.
What did we really expect from the way so-called web standards are created? WHATWG (who write the HTML5 specs and call this a "standard") pride themselves in creating a "living standard" where nothing ever is locked down, and ECMA has put itself up to creating yearly JavaScript updates (after the language has stagnated for 15 years). W3C creates an enormous amount of CSS specs and has said goodbye to versions/levels and profiles a long time ago. The result is that there is no reasonable spec as an implementation target for browser development. Those in the game have closed the door behind them.
Firefox has, unfortunately, a shrinking user base, is financially dependent on Google, and might suffer from problematic incentives in the future.
The web is in tatters.