This seems so science-fictiony that most people won't take it seriously. That would be a bad mistake.

Not only are we messing up the planet, we're also inadvertently shutting our door to space. When we're shut in, we're probably shut in for ever.

And when I say "we" are shutting that door, I mean mainly Musk.

https://robertvanwey.substack.com/p/the-imminence-of-the-destruction

The Imminence of the Destruction of the Space Program

New calculations put the date much closer than we should be comfortable with

The Evidence Files
@gleick as I understand it, Starlink should all deorbit in just a few years after failure, they have an engine to keep them in orbit, and to deorbit if they fail. It's the stuff in slightly higher orbits that are probably the risk.