Just take any project dependent on something on the list in the original article, and implement it on IE9.
But there are also a number of things like rounded corners, transparency, and event handling that are irksome. Thank God for jQuery. Seriously.
> As I see it, the blame for this lies almost entirely with Mozilla, Google, and to some extent the standards bodies, not with IE.
Different experiences, I guess. The last major web app I wrote (last year) ran on Safari, Chrome, and Firefox, on Windows, Mac, and Linux. No browser detection was required. IE8 and below were simply too feature-poor to even begin to run it (start with missing canvas, and work from there). Maybe no IE9-specific code will be required to run it--we'll see.
When I read your last sentence, though, I see "the problem is with everyone else, not IE". And that's definitely one perspective.