Continuing to say it doesn't make it true. They deorbit the satellites that stop working and their reliability thus far has been high other than the first two or three launches which had a higher failure rate. Even if they do fail completely and become uncontrollable, they're designed to deorbit within 5 years from operational altitude. They're relatively low mass and have very large solar panels for their size.

SpaceX satellites are designed to remove themselves from orbit and burn up. Few of them will be space junk.

They are a headache for astronomers. Its debatable which is the bigger public good.