Alex Jones wasnt the mastermind who created this conspiracy theory. The crisis actors conspiracy theory was already popular on the internet a couple days after the incident, months to years before Alex Jones covered it. There were numerous people speculating at the time about some strange discrepencies in the official narrative and footage which was able to convince some otherwise very reasonable people that there was a possibility that it was a hoax. So no, it cant be said for certain that he knew it was false. And no, he cant be blamed for covering a popular conspiracy theory on his show when its well known that he performs a conspiracy theory talkshow. I dont understand why this whole conspiracy which already existed is being attributed to Alex Jones. Perhaps just because he has a popular show? This is a clear case of punishing a citizen for having the wrong opinion.