Color me skeptical.
People who have information like that POST information like that, they do not just tease with it and invite unlimited attempts to prevent them from releaseing it. I don’t know who “johnheretohelp” is, but you can bet the Derps do or can find out very easily, and anyon actually having that kind of “proof” could easily suffer Arkancide, or an unfortunate traffic mishap, and being anonymous would simply disappear from social media with none of us knowing it. If I can theorize this, surely johnheretohelp can as well.
As with most like these it's a wait an see.
John is said to be a whistle-blower with inside information, seems I recall him revealing some other information that turned out to be correct.