Actually, you should look up "dependent". You say we it's okay to use it, but we shouldn't be dependent on it. Well, then why use it at all? Dependent just means we require its use, and if we want more accuracy, we do require its use. I'm preeeeeeettty sure we will still know how to use and will still have radar in case there are problems.
You know, that same government you mention could very well do the same thing with our existing radar network. So, what's the difference? Also, with satellites, we can still do visual recognition if we think something is amiss. So, technically, we're getting even MORE failsafes.
Take off your tinfoil hat now.