It's definitely intellectually lazy. But dismissing something because it was also made into a bunch of films? Utterly failing to think for yourself and just reacting via knee-jerk because it's past an arbitrary mental line of what's 'acceptable' to consider? Certainly falls under 'crazy' (i.e. high irrationality), just not what most people think of when they hear 'crazy'.

And I certainly wouldn't characterize singularitarians as advocating a human-less future without considering potential dangers. Anyone associated with the Singularity Institute for one will at least claim to consider potential dangers.