This is an existential threat to astronomy in particular and to humanity as a whole. Who will want to buy anything when all they can see are satellite trails. With all due respect, I have been amazed at the apathy of both professional and avocational astronomers. Putting your head in the sand will not make it go away.

There are no mitigating factors; painting them black just leaves dark trails instead of light ones. you can't stack them away or take images in between runs, etc.. when there are 30 or 40,000 sats in orbit.

The only thing you can do is to try to stop it from happening, with strong grass-roots political. Start writing letters to politicians, papers. Call out Elon Musk as the egotistical bastard that he has become.

What will you say to your children anrf grandchildren when they ask why you let it happen?

There has been and is continuing to be action in mitigating the effects of these satellites and the light pollution they create.
From the professional perspective, not only does it negatively impact widefield imaging and although the streaks caused by the satellites can be removed by software (which amateurs use to have pretty pictures) once the streaks are removed the scientific data is lost with removal of the pixels. The satellites also significantly impair radio astronomy, an important point overlooked entirely in the article.
Professional astronomers have approached the UN in regards to regulating these satellites from various countries across the globe: https://www.space.com/astronomers-night-sky-protection-starlink-megaconstellations
Additionally, mitigation effort continue from both starlink and amazon: ""The team is also committed to working with astronomers and others in the industry to reduce the visibility of Kuiper System satellites. We’ve joined several conferences to engage directly with organizations like the National Science Foundation and the American Astronomical Society and are applying learnings from those discussions to our prototype plans."
https://www.aboutama...type-satellites
It would have been nice if the author of the article in the Astromart would have done a literature search first before writing it. I have to question if the simulation takes mitigation efforts into account that are either occurring now or are being proposed for future launches...

As per a recent article in Sky & Tel, there's no significant impact of these satellites yet so the notion that the shielding and other efforts have had no effect is incorrect:
https://skyandtelescope.org/astronomy-news/starlink-satellites-dont-impact-science-yet/
Meanwhile, additional efforts to mitigate the effects of these satellites continue and simply throwing up one's hands and saying all is lost, particularly based upon one simulation, is in my opinion, self defeating...

I see there is another setback in reducing the albedo of these satellites: https://skyandtelescope.org/astronomy-news/newest-starlink-satellites-have-gotten-brighter-again/
But, as noted in the link, "The International Astronomical Union is establishing a Centre for Protection of the Dark and Quiet Sky from Satellite Constellation Interference." So, at least there will be a more coordinated effort to mitigate the effects of these satellites.

Unfortunately the proponents of these satellite constellations care about just one thing— kiting their share prices as high as possible, so they can sell and be trillionaires

I personally think it may be too late now.

I observe the night sky several times a night naked eye, plus binoculars or telescopes. Over the last three weeks, I kept a loose count of satellites that crossed the constellation I was observing or passed by the object I was viewing with a telescope.

The results were shocking, I saw a satellite each time I looked up. Sometimes right away, or appearing within a minute of looking up. If I went out to look right now, I'd see at least one. Three is a more likely number. Not long ago, it was a bit special to see one. For instance, keeping track of Tiangong One for a year right up to it's demise.

I purchased two vintage telescopes recently and have been practicing with both. I have had a satellite pass very close to the star I was observing 3 times in 3 different sessions, and I was looking at random stars.

I have recently seen satellites crossing paths with another and I have never seen that before. My skies are dark, I'm outside a lot observing as I watch for space junk to disintegrate as well as other celestial objects or events.

I'm afraid the dog is already out the gate on this matter. I can not even imagine the effort or cost a regulating commission would require, not to mention how a regulation of space would even be approached. We can't regulate fishing of this world's oceans, how can we tackle space? I do support the effort and maybe we will find a solution but it better be soon.