I did read the article. The context of the statement you’ve picked out is as follows

Dodgy driving – covering such reported infringements as speeding, jumping a red light, overtaking on double white lines or ignoring the humble pedestrian crossing – was more likely to be a factor when a Subaru, Porsche and BMW was involved than a Skoda or Hyundai.

The authors have hand picked these items but they don’t say that these behaviours are exclusively what’s defined as risky or aggressive behaviour.

I agree with your statement:

Anyone who overtakes on a double centreline is an utter twat and well deserves to be called dangerous.

I’m not sure if you thought I was implying otherwise?