[simne]

You first plasma physicist in this topic. I'm electronics engineer, but learn plasma physics also, so I also see very obvious mistakes.

But I also have ballistics knowledge and know about Sun wind and light pressure on particles, and I bet, just light pressure is enough to clear space from powder in very short time. Even if threat is real, will need just few months to clear space from dust.

Simple physics suggests, macroobjects, like satellites of classic size (kilograms and tens centimeters) could for long time be on orbits, because high ratio of mass to square, but microparticles (micrometer scale or less), have much less mass to square ratio, so light just blow them away.