Okay maybe we were exaggerating, it can't take on whole countries except maybe France unless it was a tinny island somewhere. You could achieve air dominance then proceed with a ground assault via Air Cav.
Submarines? Sea King helicopters armed with Depth Charges. Now your gonna say lulwut but there is no country where you could contemplate waging war with a single carrier that would have any submarine effective enough to sink a carrier.
Not to say anything of recent red flag exercises where Diesel submarines were able to go through an entire CBG undetected, but no, that's ludicrous. Besides, an anti-ship torpedo from any modern submarine has much more range than the Mk 46.
Stop trying to point out situational cases where you might possibly be right.
The original argument was why anyone would put the FEL on an aircraft carrier since it is not the aircraft carriers, as a ship, duty, to attack. When it comes to ship-based weapon systems, that is the job of a DESTROYER or CRUISER.