Just to be clear… you believe because the satellites are low enough that they will only last a few years, that they cannot run into each other and cause a cascading effect of debris? I mean, sure, the cascading effect (Kessler Syndrome) might only last a few years, but it still could happen, couldn’t it? Or is there something special about them that means they can’t actually accidentally run into each other and break apart, with the pieces hitting other satellites and breaking apart…?
I’m not sure why these satellites being in low orbit protects them from the laws of physics.
facepalm
Right, I understand you now. You are being pedantic about the definition of Kessler Syndrome, assuming people are using it to refer to a permanent status. Gotcha.
In short, you don’t disagree, you just aren’t using the same words to mean the same thing as everyone else, leading to confusion and conflict.
Kessler Syndrome, even if it “only” lasts a few years, would be devastating. That is what people are worried about, and that is what could happen, even with low earth orbits. Given big enough pieces of debris, the “any significant period of time” you refer to could certainly be significant enough to cause lasting problems.