I don't think they mean they didn't like leaving the space because people moved into that space, but because they did so in an unsafe manner. I've observed muc

I don't think they mean they didn't like leaving the space because people moved into that space, but because they did so in an unsafe manner. I've observed much the same thing. After a certain distance, you will find people taking extra risks just to find a way into that space. Then once they have managed to weave their way into a position where they can move into that space, they will frequently do so mere feet in front of you. They will not take advantage of the giant space available and simply get in front of you at all costs as fast as possible. It's really not about somebody getting in front of you, as it is discouraging them from risking their life, yours, and multiple other people's around you, to get into the somewhat larger space available.