Starlink satellites will never contribute to Kessler syndrome. They are far too low for that
Even if they just stopped working in their existing orbit (worst case), they will burn up in a handful of years max
Sure, but that’s just Starlink. G60 was just launched at 1200 km, which will take thousands of years. OneWeb is at a similar altitude. Both are currently much smaller in scale, of course, but still potential problems. Not to mention the impact all three systems are having on astronomy.
For Starlink, I’m much more concerned about the aluminum oxide pollution. I linked the study in my earlier comment, but this magazine article does a better lay explanation: https://universemagazine.com/en/starlink-destroys-the-ozone-layer-that-would-recover-by-2066/ The worst part for me is that we might not actually see the bulk of the effects until 30 years from now when the aluminum from hundreds of tons of burnt up satellites descends into the stratosphere where 90% of our ozone is.
