Dang, I was pumped for EV charging discussion since I think I’ve figured out a clever solution. Maybe later. As for orbital debris, in theory it can become a barrier to our planet future satellites. The Starlinks are at a low enough orbit they require an active boost system or they naturally decay to reentry and burn-up. Bob Wilson
Was this part of an Elon strategy to litter the area so badly that no competitor could use the same region and be forced into achieving a higher orbit? The fact he has made it so messed up that his own satellites have to play dodgems, might mean he didn't realise how fast it could escalate into a virtual no go zone ..... his satellites can dodge the bits at the moment .... until they run out of fuel, but what about all the other junk that is unpowered and can't play dodgems, so collide and just add more litter .... The smaller the pieces, the harder to detect, but they still make holes in other objects travelling slower than they are and at a different orbital path ..... Maybe, they have built a space protection layer that will stop the Martian's from invading T1 Terry
The relatively higher drag at Starlink altitudes quickly degrades any unpowered ones into re-entry. Higher orbits have less residual drag so they have a longer interval to play ‘bumper cars.’ Bob Wilson
Star-de-linked are now re entering about one per week. One assumes they use their last bit of ion thrust to splash at Point Nemo but I have not seen that discussed. An important risk of orbiting pieces too small to track is disabling orderly de-orbiting of satellites. Those then become bumper cars with large cross sectional areas. Bumper cars might not be an ideal analogy because that game is based on surviving impacts. == Giving Earth an orbital shield of Kessler debris might work in sci fi, but if ETs manage to get all the way here, they'd need to have good bumpers already installed.