Drank the Kool-Aid

I keep hearing and reading this being used in an odd way. For some reason this phrase has begun to mean that someone is buying into propaganda or becoming a believer in something that might not be true. As opposed to its origins where it was not actually the first thing you do it was the last thing you did. In Jones-town the majority didn’t do this because they wanted to, they where forced or tricked. Seems like we could get this right given 909 people died (second largest loss of US civilian life ever) giving us this cliche.