Does Tucker Carlson know what FMJ ammo is designed to do?
Do any conspiracy freaks?
Forget about the ammo - they don't know (or care) about any of these details - do they know who JFK was? They've created this mythical Arthurian JFK who was a threat to "the Establishment" or the "military industrial complex" and it was for that threat that they killed him. You know the old "He was pulling out of Vietnam" nonsense. No, he was not going to pull out of Vietnam at that time; he had just approved the removal of Diem and he and his people thought that American power/resources could win out.
The conspiracy believers have a mythical Oswald - he was really a CIA agent pretending to hold radical views - and a mythical JFK - he was really a critic of American foreign policy and was going to end the Cold War - and out of these myths they create this incredible conspiracy involving hundreds of people over decades. It's insanity.
The assassination is an instrument, an event, a tragedy that these people who are angry at the CIA or "the Establishment" use to go after them. Usually we have people on the hard left like Oliver Stone or hard right like Roger Stone. Carlson is angry at the FBI and CIA for the Trump stuff. So are a lot of the Trumpian right (and some of their complaints have merit). The JFK assassination is the perfect vehicle for people to use to go after whatever monsters they have in their heads. It's why we have so many different explanations as to what happened. It was the CIA, no it was the Pentagon, no it was rich Texas oilmen, no it was the FBI, no it was LBJ. So many different culprits.