Space is really, really, really big. You have no concept of how much room there is up there. The answer is right in the article:
“Space is not overcrowded. We humans are just really crap at understanding scale and numbers.”This headline is pure clickbait.
I agree with you. Let’s say that there were 10,000 fast cars driving all over the surface of the earth (without any oceans or obstructions). First of all, if they all stay on course, they shouldn’t hit each other anyway. But even if they had course changes or random directions, the odds of something so few and so small hitting each other is very very low.
Now, consider the fact that they orbit at different altitudes, and then consider that the altitude of their orbits mean that they travel in a sphere that is even bigger than the surface of the earth, and you decrease your chances of contact even more.
And as if only a 55 word excerpt was allowed.