I've read all the same articles from Consumer Reports as well. They do not like the smart at all.

They like the Honda Fit. They tend to recommend the Fit over a lot of other cars. I think Honda is paying them off. (my opinion)
From what I've read it looks like they had either test drove the 450 model and from my understanding the 450 is not as smooth as a ride as the 451 model. I could be wrong. The other thing is that it sounds like they are testing brand new smarts that have not been broken in.
When I first got mine yes, it did ride a bit lurchie, but it has since been broken in (break in at about 2,000 miles) and no longer lurches.
As for the bumpy ride itself. Yes, it is a bit bumpy. It's a little car and there is no room for great big giant shocks. If you're driving on a nice road you won't notice. If you're on a road full of pot holes like all the roads are here in the DC area (ha ha) then you'll notice. However, I have found that the smart is small enough to drive around most of the bumps and still be in your lane.
Happy driving!!!!