Conspiracies are known to exist and people get convicted for conspiring so just saying “Conspiracy Theories” means nothing. You can say one is likely, not likely, possible, impossible or whatever but every single conspiracy theory is not exactly the same as any other.
A wise man, no doubt wiser than I, once said that the history of conspiracy is the history of the world. I agree, from “et tu Brute” to the actor J.W. Booth and friends and on and on. Those who lecture on how “rare” and “difficult” real conspiracies are seem to me to be living in an alternate universe but maybe I’m just a nutcase. On the other hand I am familiar enough with the definition of conspiracy to know that it is far from rare. We used to listen to a song called Winter Wonderland which had a lyric line that went,
Later on we’ll CONSPIRE
as we dream by the fire
Apparently it was not necessarily considered evil to conspire then. People could conspire to do good things.
Very few people who talk about the madness of conspiracy theories seem to have any idea of what the word means.