Iridium flares are a big thing though. You won't see them all night but around dusk and dawn, when the sats are lit by sunlight but the ground is dark, they can definitely be seen very easily.
Iridium flares don't happen anymore. All the Iridium satellites that flared were de-orbited a couple years ago. They were replaced with a new constellation (Iridium NEXT) that has a different antenna design which happens to not flare.
