Astronomy issues: https://en.wikipedia.org/wiki/Satellite_flare#Mega-constella...

Orbital debris: https://en.wikipedia.org/wiki/Kessler_syndrome#Potential_tri...

Nobody bothered to look at the details.

This is a solid contender for humanity's epitaph.

The concerns are difficult to dispute because they’re “not even wrong”. There are no specific claims that can be disputed.

Serious astronomers don’t just look at a photo with bright dots and get confused because some of them are satellites. A few predictable bright pixels are the least of their concerns.

As far as space debris, see https://en.m.wikipedia.org/wiki/List_of_space_debris_produci...