While the example slides in the article are very bad; the key point here is that a presentation is not the slides and the slides are not the presentation. Slides are supposed to be a presentation aid and help reinforce what was being said and the story being told. Taking slides in isolation to the context of what was being said and how they were used in the presentation is just as bad as giving the bad presentation in the first place.
The worst things about PowerPoint are the emphasis on bulleted lists: almost everyone using ToDo lists or outliners has moved on to GTD style approaches rather than simple bullet points - why haven't the developers of PP learnt this ? at least get rid of the default layout being title and bullets; the abundance of "clip art" which should have been phased out when DTP went out of fashion; the default of scaling without preserving aspect and allowing massive zooms on bitmap graphics; and finally the crappy animations and transitions that there are far too many of.
As they say, power corrupts and PowerPoints corrupt absolutely.