Almost exclusively these people will zip around a line and force their way in at the end. Even kindergartners are taught budging in line is not good.
Why is this the problem on the people actually being considerate and are in the correct lane at the appropriate time?
Zipper merging [0] exercises a different kindergarten skill, taking turns. Still, "lines" are a small minority of lane-changing situations, all of which involve taking the open space in an adjacent lane.
"Lines", to use your emphasis, are by far the major time component so for me this is a meaningless distinction. Normal traffic merges should of course be accepted gracefully.
I find it inconsiderate frankly, because it forces an arbitrary decision rather then just patiently using the available road as marked.
https://www.freep.com/story/money/cars/mark-phelan/2018/07/0...