I believe that an atmosphere compatible with human life is a bit more useful than internet by satelite. The fact that the impact of re-entry of satelites is absolute insane. Any good engineering company would study the whole impact of scaling up before doing so. The fact that spacex didn't do that is really worrying and regulation should come to stop what they are doing asap until the impact is better understood. Some more serious engineers at Japan aerospace are studying wooden satelite which is a quite approach to the problem.
I am not aware of threats to the atmosphere from the entry at a 100kg/day scale. And nobody is. At this point risks are hypothetical to the ozone or other layers.
if the aersols do cause any problems we're done for quite a while as they do not seem to come down. As I understand it the amount of aerosol will be quite significant in this layer of athmosphere. https://csl.noaa.gov/news/2025/427_0428.html
