Aye, merge. Barging in is not on and the possible results of doing it are in the video above.
I read your comment as meaning you thought we shouldn't be driving to the end of the slip. There's a widespread idea that using the whole slipway is 'skipping the queue'. So, you end up in a situation where the queue sitter inners refuse to zipper merge, 1 for 1, at the pinch point.