1. LEO latency sucks for FP shooters
2. Given the shear volume of the sphere relative to the size/amount of the satellites, the "useful" space around Earth might be .00000001% more crowded than it was 10,000 years ago.
3. The biggest hazard to satellites and space stations of all types are still going to be the tiny particles of natural space junk - the earth moves through many paths of comets that litter the orbital environment each year, for example.
4. Any Ham worth their salt still learns morse code, and has a 100 ft tall antenna in their back yard that screws with their neighbor's tv reception.