Earlier quoted context omitted.
The second half of that explanation is completely wrong though, isn’t it? There is no active signal being sent from your GPS antenna, no two-way communication.
The first half is wrong too. GPS has nothing to do with satellites being able to see lots of things from high up. The whole thing is just nonsense that looks plausibly like an explanation until you try to decipher it.
It does in a sense because the radio waves need an approximate line of sight to reach your GPS receiver. Being high up gives them a large coverage.