I have many concerns about the unconstrained used of near space for commercial and geopolitical advantage. From an amateur astronomer view, as Paul Leyland says, a few photometric observations could be spoiled but stacked images can still be edited. Using a smartscope recently to observe in real time I noticed that a satellite track quickly dimmed and was almost invisible in the final image.
But if the predictions of a general increase in global sky glow prove correct (see first link below), will it not reduce the contrast achievable by all instruments everywhere? One implication of this is that dark sky reserves could become a bit irrelevant.
When adding up the other potential threats (such as increasing radio noise, human rights impacts on diverse cultures, the risks of a Kessler syndrome event, the potential for military /commercial instability…), I think this is a topic that everyone should be aware of and have a democratic say about.
Are there (enough) BAA members willing to come forward and start a campaign?
British Astronomical Association
Supporting amateur astronomers since 1890