That's not accurate unless you think the current satellites (many of which are far brighter, such as ISS and Iridium flares) already "ruin" the night sky.
I watched a recent pass of the Starlink satellites, and now that they're oriented near their operational directions, I could barely see them. I only noticed them because I knew right where to look. Unlike the flashing lights of passing aircraft which were a lot more distracting.
SpaceX will also be serving orders of magnitude more customers than Iridium. Being closer also means they'll pass in the Earth's shadow earlier in the night than Iridium.
They were much brighter and closer together right after deployment than in operation. Already, they've spread out and are now aligned in operational configuration so they're far less noticeable than at first. On par with typical satellites. I spotted them night before last, and it was difficult to see them.
ISS is also sometimes reported as a UFO. It's often brighter than Venus.
I watched a recent pass of the Starlink satellites, and now that they're oriented near their operational directions, I could barely see them. I only noticed them because I knew right where to look. Unlike the flashing lights of passing aircraft which were a lot more distracting.