You are correct. However, this discussion operates on some level of abstraction, and you're jumping off it.
It's like talking about eucledian geometry and then saying that no physical object is actually a single point, straight lines do not exist and parallel lines would collide due to space-time curvature.
It's like talking about eucledian geometry and then saying that no physical object is actually a single point, straight lines do not exist and parallel lines would collide due to space-time curvature.