This is nonsense. Yes, Microsoft is acknowledging that most intranet sites aren't properly configured to work with all browsers/standard compliant. But that hardly means they're breaking the promise to make IE render web pages in standards mode. This is probably the best solution to the broken intranet sites issue anyone could have come up with.
And the whining about the icon is truly ridiculous. The logic for Microsoft's choice is obvious: "Does the site look broken to you? Click on the broken page button."