SpaceX also intends to deorbit two of the functioning satellites to test the process.
There are still early days for Starlink, but it suggests that you won't see a number of dead satellites that seal up the Earth's orbit. The concern is more of a scale. Finally, SpaceX hopes to launch a constellation of nearly 1
Fortunately, the satellites will not last forever. SpaceX already expects the satellites to last five years before they get into the atmosphere. It's just a matter of how many of these machines do a controlled dive instead of failing in unpredictable ways.