it also seems to be a roughly proportional change in density so why would it be unhelpful? Just because you can't point to a specific feature and say that is 1

it also seems to be a roughly proportional change in density so why would it be unhelpful? Just because you can't point to a specific feature and say that is 1.6nm, doesn't make the label meaningless as so many try to assert. It is a label that represents a process that results in a specific transistor density. What label would you prefer?