No, it's not doubtful at all. Why should we doubt it? It's not difficult at all to fathom.

It hasn't taken long for the fringe conspiracy wing in America to invent the "false flag" nonsense. Kinda like the "Sandy Hook was a hoax" and "9/11 was an inside job" Alex Jones followers. It's sad really, and this is the constituency that, like Trump, like to holler "fake news!" whenever a level-headed, fact-based story is published.