All astronomy can’t be done from space. Space has many issues such as maintainability, heat, reflector sizes and the list goes on. I have friends and former colleagues who do astronomy.

I’ll trust the experts who’s profession are actually impacted.

I believe GP was talking about the ever growing space debris.

https://www.esa.int/Safety_Security/Space_Debris/Space_debri...

These satellites should be in low enough orbits that any junk from them burns up in the atmosphere as their orbits decay. Maybe there could be an issue from collisions in low orbit pushing objects into higher orbits but those likely would be erratic orbits with low points that still subject it to decay.

OneWeb's constellation is high enough that it'll take a lot more than 25 years for any satellite that fails to deorbit itself to decay. On the way down, these debris will cross the ISS orbit and the most popular sun-synchronous orbits.

Starlink is lower, but still above the ISS and the SSO at 282km.

>the astronomers can launch a thousand Hubble-style space telescopes

Who pays? The public pays for telescopes and Elon and other billionaires make more money from the internet satellites and now from putting this new telescopes up , I would be fine if SpaceX and the others would have to pay a tax that will fund astronomical telescopes on Earth and space.

About the astronomy is done with computers, there are problems that you can't jsut solve by throwing a computer at it and if there is a solution it probably costs.