Interesting clip.
But the whole problem is self-exacerbating, and not just about lane mis-use.
In the clip when they look at the 4 cars ahead in the middle lane, there is a lorry a little further ahead in the inside lane. And I think another lorry overtaking, in the middle lane. On a hill.
Long experience tells you that should you that if you do pull into the inside lane, planning to overtake once you come up behind the lorry, you will find yourself trapped in the inside lane, behind a lorry going up hill, and the middle lane will now be full of OTHER middle laners who will not let you pull out to overtake the lorry now labouring up hill in front of you. And NO CHANCE of overtaking onto a gap big enough to allow any decent or safe stopping distances.
Or that the traffic in the middle lane will now be doing 80 or 85 mph with no gaps long enough to pull out from being trapped behind a 60 mph lorry.
And obviously pulling out in front of anything which has to brake or slow down to accommodate you is dangerous.
Lorries overtaking each other on uphill stretches should be banned. There is a stretch of the M11 where it is banned during the day - but they still bloody do it.
It's a simple message they give, but to support it, other drivers need to maintain stopping distances, be courteous and allow other people out, and not assume that they have the right to travel at extremely high speeds, thus making the overtaking lanes only available to those who join them at 90mph.
People don't want to get trapped behind a lorry doing 55 or 60mph when the alternative is trying to overtake onto a line of traffic tearing along at 85 mph. So they stay in the middle lane.
I'm not saying it's the best driving, but it's more complex than 'they all are incompetent old codgers'.