Yeah I probably wasn't clear in that I meant I'm not aware of any legal basis for saying that requiring ADS-B for private/commercial air traffic is wrong. For example operating a 172 is not a constitutional right so tracking you while you do isn't isn't necessarily a violation of any particular right.

I think it's wrong that the government exempts themselves from it if they're going to require it of everyone else, but that's so far down my list of grievances with the government it's barely worth thinking about :)