I take your point. I think all of us love a good conspiracy story, which is why the story is still running.
Just in case you haven't heard, the cavers are now been held in jail for more questoining, and to give the Mexican authorities time to analysis the laptops and other equipment they were carrying.
Holiday or unofficial scouting expedition, the Mexicans ain't happy, and are holding the cavers on the basis that they broke the terms of thier visas. The paperwork doesn't sound like its in order at all.