Glen Chapman’s review published on Letterboxd :
I should start this review off by stating that I have had sex, I don't live in my parents basement (they don't have one in fairness but I assure you I moved out years ago) and have never been to comic con. I may seem strange to frame a review in such a way but from what I learned from this documentary these are essential milestones in order for your opinion to be valid.
Although the title is heckler only a third actually relates to hecklers in the traditional sense, the rest of the film is a bit of a moan that can be summed up as "aren't critics a bunch of dicks!?" and as such the film is effectively critic proof as if you don't like it it's because you are a critic and can't handle the truth. Nothing to do with the fact that it comes across as unfocused although it is quite amusing at times.
A lot of celebrities appear to have a moan about people like you and me making some rather ridiculous generalisations. But hey we deserve it right?
I would write more but I'm probably not qualified to do so.