Earlier quoted context omitted.
Yes. The CIA had already started circumventing the POTUS's executive authority in Eisenhower's administration with unauthorized U-2 overflights of the Soviet Union, but it was when a rogue faction within it assassinated Kennedy (with some "special" help) that the CIA became the final word on any matters of real consequence to the U.S. empire.
Assuming the CIA assassinated a president because at one point someone gave a command without being explicitly authorized from their superior is quite a leap, don't you think? I have heard many different equally baseless conspiracy conspiracy theories about this by now, and they all have two things in common: They each conflict with the other theories and their adherents all sound utterly convinced they are right. Wh…
Indeed it would be, and that's not what I was doing in my post. I brought up the U-2/Eisenhower history only to establish that the CIA was already taking steps to make itself the final arbiter on policy, above and independent from the POTUS. Especially when it came to any potential rapprochement in the Cold War, toward which JFK was also making serious overtures just before he was killed.
You can go looking through the vast numbers of theories around JFK's killing and find absurd ones I'm sure, but lumping them all together into one big undifferentiated mass hardly makes for a good argument. In favor of the existence of a conspiracy, there are numerous witnesses and extensive documented and circumstantial evidence, and the motive for such a conspiracy is clear. It's one thing if you don't find that evidence persuasive but it's ridiculous to call it "baseless."