If you haven't heard a SSN OTA it's not because they're not being ran, it's because you haven't heard it. If you haven't ever heard one ran, or haven't heard one in the past 20 years, it's because you're a terrible listener, or you're listening to the wrong channels. Hell, I heard Grant Co run a soc last month, after the law was in effect. It's an issue, whether you hear it or not.
If we change the topic of this conversation from "SSN/radio encryption" to "cocaine", and then read all of these comments again, it would good something like this:
'I don't have a cocaine problem. I've never had a cocaine problem. I haven't hadn't a cocaine problem in 20 years.'
Just because you haven't had a cocaine problem, or heard a SSN OTA, doesn't mean that it isn't a problem in Podunk,IN, and that there shouldn't be a law against it to protect all Hoosiers traveling through Podunk, IN and every other backwoods podunk town.