One guy set his nuts on fire, the other guy was so stupid he didn't think to bring a lighter on board. Risky? Maybe. Dumb as a bag of hammers? Absolutely. Boarded a flight in the US? Definitely not.

Risky is traveling in rush hour traffic in LA or DC or pretty much any major US city. Risky is eating fast food for lunch five days a week. Risky is smoking cigs or drinking lots of booze. Taking a domestic airplane ride has a minuscule risk of crashing, but practically zero risk of a terrorist trying to hijack it or blow it out of the sky. If someone with half a brain really wanted to crash a plane, they could. Put a plug up their bunghole filled with explosives, get on the plane, go to the bathroom, squeeze it out, and presto, you have a real threat. Nude-o-scopes, taking off shoes, throwing away bottles of water and asking them where they're flying will not stop that. The fact that no one has done that so far - and TSA or anyone else couldn't stop them if they really tried - makes it kabuki theater.