The guy is kind of a moron. "Obviously, the TSA has been trained, although poorly, to look for Bitcoin. They are apparently now trying to catch money launderers in addition to terrorists"
No, dude, you've ALWAYS been required to declare when you're carrying any monetary instruments in excess of $10K in or out of the country. This is nothing new. There's no new policy, it's just a case of someone at work that day had heard about bitcoin in the news, didn't know much beyond the news (that bitcoins are worth lots!), spotted the bitcoin logos and discs, didn't know what to make of that and passed the problem to their manager who also didn't understand bitcoin. The usual TSA incompetence took it from there.