I can't disagree with the fact that the lane was vacated far too early, you can see how much ground has been covered by the Mercedes driver. I know how the roads work, in an ideal world everyone would let one another in and take turns to ensure its a smooth transition through the blockage.
But given the situation I can see why people have got annoyed at the Mercedes driver. Everyone else is queuing patiently and the perception is that the Mercedes driver is trying to jump the queue to reduce the time he needs to wait for high increases the wait time for everyone else.
I'm sure everyone would be annoyed if you were in a 10 person queue at the supermarket and someone sails to the front when you have been waiting. Given how this has panned out with everyone merging too early, that's essentially what's happening here.
This is more like there being 10 people in line for one till and none for the one next to it. Then everyone getting annoyed when someone goes to the till with nobody using it.
I said it above, if the lane wasn't there to be used it would have been coned off further up the road