Even if they push the albedo from (say) 70% to 10% thats only going to be 2 and a bit magnitudes, so you go from a 3rd mag satellite mucking up your images to a 5th mag. Great.
Given that even geosats mess up deep sky images (and they are normally 8th mag or fainter) I’m not seeing much benefit.
The problem is he has a business plan to make money. What is his incentive to stop?
If we said anything, I wonder what he would call us?