Bit late to the party on this one
The British are known for their love of queuing
The thought behind it is if you were in a fast food restaurant with 3 tills open and the third closes, would people be happy in queue 2 if people kept walking up to queue 3 and then cut in front of them, there would be a hanging.
Smart motorways are anything g but, they put up a temporary enforceable speed limit without reverting back to the original speed limit , by law you have to remain at that speed limit unless told otherwise which is why they sometimes show the national speed limit sign again if there is a gantry available
There are not enough gantries which is why you get confusion over if a lane is open, closed or a temporary speed limit is in place
The official line I see in this situation is you are are supposed to merge in turn at the closed lane which does go against instinct to some if you are queuing patiently
What is annoying and dangerous is if there is a dedicated inside lane for traffic leaving a motorway and people seem to think it is ok if they go fast enough to pile in at the last second from the second or third lane regardless of how big the gap is which has lead to many accidents on roads near me.
I would imagine the drivers blocking the carriageway are committing an obstruction offence but Goldie is the one with the stripes