What is the chance that people will find truth in sources that agree with their world view and call "disinfo" anything that disagrees with their world view?
Pretty high. Some more than others but we all do it. It is a pretty natural human response. There is quite a chance it could be planted but pretty near 100% chance that if certain radicals got access to a weapon like this they wouldn't hasitate to use it on a large city. Unfortunately there are people in the world that have convinced themselves the lose of innocents is acceptable for their noble cause, no mater what side they take.