Very interesting video, good find. I wholeheartedly agree that this is something organizers need to address for future rallies, regardless of how few accidents actually occur as direct or indirect results of this. By driving like in the video above, the message that is put out can only be harmful to the image of rally drivers and how they're perceived by the general public.
... and then there's Jari-Matti's liaisons, hehe. Abiding local traffic laws, nice to see, eh? And maybe it's just me, but I can practically see him waving back at the locals around Trier in this video from 2013. :D
https://www.youtube.com/watch?v=PTk1ocYcBUE
-Ethan