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
I might take it more seriously if it appeared in an actual science periodical, and not a substack.
Satellittes do move very fast, but they are mostly launched in the same direction (East), so their relative speeds are not necessarily high.
GPS generally uses MEO , so what happens in LEO wouldn't impact it.
Musk's Starlink satellites come down within 5 years! To maintain the network, he has to keep launching them!
James Gleick
Number6 