It’s a threat to night. At the 5,000 to 6,000 that are up there now, plus the accumulated space debris since the start of the ‘space age’, studies show that the cumulative reflected light has already reduced darkness, everywhere, by 10%. At 100,000, and the corresponding increase, and increase in rate, of debris, probably no more Bortle 1 sites, and maybe no Bortle 2. At a million, no night.
That a single individual wouldn’t hesitate to change our world (in every respect) in such a profound way to serve their own ends is avarice and ego of an unprecedented level. That everyone else let’s it happen is self absorption and complacency at an even greater level.
Scott