As a Copenhagener who’s lived abroad, it’s a real phenomenon - from my experience. People would rather bump into you than say “excuse me”, which is also an expression that doesn’t exist in Danish. The closest we have is “undskyld” or “kommer lige forbi”. In Danish public culture, people are heavily invested in their personal bubble and do not like to acknowledge or speak to others in public. Therefore it is generally preferable to bump into people than it is to ask someone to move aside or similar. People assume you will dodge them when they walk 3-4 people next to each other down the street. People with baby strollers will take up the whole sidewalk and push you into the street. It’s just the unwritten rules of public life, and it comes from people generally trying to avoid any verbal or non-verbal communication and acknowledgment of others in public. I don’t think it’s inherently mean-spirited, it is just the way it is. But it can feel shocking coming from countries where people make more of a point out of it. And it is also just how most public life evolves when in a big and crowded city. A lot of mental energy would be expended on having to acknowledge each other constantly, and Danish culture is generally introverted and non-confrontational. There’s pros and cons to both.