Satellites will still be visible.
A couple of characteristics make human satellites easy to see. They are fast and bright. Slow objects are difficult to pick out from the background star field. Faint objects don't emit enough light to be seen by the human eye.
Let's see how orbital period compares with orbital decay.
||Orbital Period (hh:mm:ss)
Orbital Period Source
The difference in orbital periods between 200km and 900km is only 15%. These speeds should be easy to pick out against the background star field. If humans have regressed to where light pollution isn't a problem anymore, then it should be even easier.
Brightness will depend on the satellite's inclination toward the viewer, altitude, physical size and orbital position. The larger and lower it is, the brighter it will be.
Lumosity is calculated by $I = C / d^2$ source
where I is lumosity, C is the source brightness and d is the distance. For our purposes, we only care about the effects of d.
At 200km, the lumosity of the satellite is reduced by a factor of 40000. At 900km, it's reduced by a factor of 810000 or 20x dimmer than a satellite at 200km.
The Sweet Spot
Satellites between 500km and 900km seem to have the best chance. Their orbital decay is measured in hundreds or thousands of years. They are also low enough that brightness shouldn't be too dim because of distance.
There's plenty of wiggle room on the brightness calculations to plausibly assert that there are lots of visible satellites or only a few.