I mean, the real argument here is between "something interesting" and "something boring", and it's message board so "boring" is heavily disfavored. But, yeah, it's a sewer inspection van.
My comment did not express any opinion as to whether this was or was not a surveillance van, and this has no bearing on the proposed alternatives being a false dichotomy.
With GP's clarification, it's still shaped like a false dichotomy but I don't think it's one in spirit. It sounds more like reductio ad absurdum to me, with a sprinkling of hyperbole for effect.
