Jesus Fucking Christ. It is not out to kill off the others. Google supports the current and previous versions of all browsers. That's a good thing. Take a look at this table
http://www.quirksmode.org/css/contents.html
And see, mostly down halfway to selectors, how much of CSS3 is not supported by IE8. Those are things that will improve experience that IE refused to support when it developed 8.
Google moves directly ahead and drags IE, kicking and screaming, against its will, into the future. If XP users want to continue they must install a browser that supports modern protocols. Chrome, Firefox, or Safari. It takes five minutes to do that, and they can even install an extension that makes their browser look, feel and act like IE.
Jesus Fucking Christ.