Putting aside this particular incident as conspiracy minded nonsense (since of course every part of the body is up for examination, would make drug smuggling idiotically easy if they knew for example a screener would not check the breasts) the TSA is totally worthless in stopping terrorists, since all their procedures are reactive to things ALREADY done instead of innovating to prevent future attacks. The only thing the TSA does is give a false sense of security to the simple minded about how safe they will be.
https://www.youtube.com/watch?v=QKEdKdgi2hg Heres a well explained reason why the TSA is basically there to catch low level drug smugglers.