Well, it's a choice. More often than not people will let people in from the open lane when taking the piss. Not me thoughPeople should use the closing lane, then if they do go right to the wire, sit and wait to be let in. Otherwise, pootle down the closing lane, whilst making progress and then signal in plenty of time and/or find a gap. Or sit in the open lane at the earliest opportunity, if you want to cause yourself unnecessary delay.
No one is put out and the traffic flows as intended.
Some people make this sound hard.