Merriam-Webster on ecology: "a branch of science concerned with the interrelationship of organisms and their environments"

Humans are organisms. Humans go to space, and will go there more with it getting cheaper. Orbital space is an environment. Debris collisions are an ecological concern for spacefaring organisms.

That's a usefully expansive definition of ecology. Next time somebody in my household forgets to put the toilet seat down, I'm going to lodge an 'ecological' complaint with them. After all, I am an organism and bathrooms are an environment; it ticks all the boxes.

Less snark: I think definition (or more accurately, your expansive interpretation of it) misses the spirit of the way that word is generally used.

Generally ecology requires multiple species in interrelationship. Not really an ecosystem without inter play between organisms (species) and the environment. I also don't see classes being taught covering space ecology, so I don't feel it fits.

Sentinel-6, GRACE-FO, ICESat-2 are among only a few of the many numerous LEO observational satellites that are at risk should a Kessler syndrome occur... our ability to watch and build predictive models of what's going on with our ecology can/will be lost; this is a huge added problem to the ongoing global ecological collapses and affects our ability to mitigate climate change

Not to mention all the communications systems we have in orbit that we rely on for our economy which would result in significant loss of logistics / economic efficiencies and straining growing social political issues. All of which means higher likelihood of damage to local and regional ecologies

This article is focused on LEO. Many of these satellite uses can be achieved in MEO or even HEO.