If you start clicking on the main qanon jfk stream and then click off of it to who is retweeting and replying You get a good sense of who these people are.
Many of these accounts have 30 or 50,000 followers and echo this stuff.
It's a hodgepodge of pro-trump, anti-vaccine, anti-science, conspiracy theory idiocy.
The peacock account that retweets a lot of this stuff has recipes to make your own hydroxychloroquine from boiling fruit. No need for medicine when you can just make your own HCQ!
The more active people range from Americans all the way to Swedes. Looking at profile pictures you get a real sense of GRANDPA FW:FW:FW:FW:FW THE TRUE STORY THEY DONT WANT YOU TO SEE!!!!11111
The only common link appears to be a desire to be the only ones who can see the reality. It's a quagmire where critical thinking goes to die.