They have left with a fraction of the people that could have been carried. That is at the instruction of the UK government and Boris Johnson. I am quite sure that they are doing this because many UK residents are anti immigration from the point of view of the so called migrants coming across the channel.
That is not the case for most people who are moral and who have humanity, as the people who are coming across the channel are not the same as those fleeing for their lives from Afghanistan.
It is said that more and more channel migrants are saying that they are Afghan refugees. If that is the case, then they should keep their papers as if their lives depended on it; they have nothing to hide