Whenever people say "of course that conspiracy theory can't be true, think of how many people would have to be in on it, and how many gullible people would have to believe them." I just reply with "Santa".
"Dad, is Santa a fake actor and Christmas a hoax?"; "Of course not son, think of how many people would have to be in on it, not to mention all the naive and gullible people to buy it."; "You mean like Zelensky and the invasion of Ukraine?"
