@sundogplanets I raised the question of orbital crowding and collision debris with a Starlink employee recently. I'm concerned about much, but that issue in particular seems like a big one.
The response: Life of individual satellites is single-digit years. They're still subject to atmospheric drag and orbits will decay. They'll reenter, burn up. Same is true for any debris due to collisions. Sort of "self-cleaning."
Do you buy that argument? Pointers to more reading I should do?