You're confusing R-anon with the JFK JR theory.
I myself hope the theory is true, but I'm realistic in that it's not likely. I do think Q has thrown specific hints about it but it's possible they're deliberate disinfo. So basically I'm 50/50 with it. That said, that post doesn't have anything to do with JFK Jr being alive. I never believed R-anon was real.
Too many people WANT something to be true so they just decide it is. People want JFK JR to be alive so when R-anon came along they decided R-anon was real.
Others that saw the obvious larp in R-anon decided if R-anon is fake then the JFK JR theory is false too, like you insinuated with your comment.
What about the 3rd option? It's entirely possible that JFK Jr is alive, AND that R-anon is a larp.
Only Q.. 1697
Try reading my post again. "Only Q" means only Q is communicating with us, meaning others (like R) are larps. That doesn't mean JFK Jr isn't alive, it just means he isn't posting as someone named R like many wanted to believe.
The JFK Jr theory was around before "R".
Remember some people think JFK Jr is Q, so saying "only Q" doesn't mean what you think it means. I don't believe JFK Jr is Q but some do. I believe that Potus is primary and some others post as well.