Am I right in understanding Boll is mad because people don't want to fund his video game movie and would rather go see a comic book movie instead? Is he actually claiming Rampage 3 is more real?

Like there aren't already hundreds of interviews, articles, blogs, videos, pictures, and so on about every single misstep in the man's life. What is there left to discover? It's not like RDJ's trying to hide something; he's been brutally open about these events in the past. Now he just wants to promote his $250M movie.

Is this an article or a piece of fan fiction?

Hopefully the latter. RDJ can generally make anything watchable, so it should be entertaining, if nothing else.