I support the freedom to produce unconventional art. I'm just pointing out the empirical fact that if you produce a work of art that follows the conventions of a genre, people are going to judge it according to those genre conventions. That's how communication works, it's entirely normal and expected. If you want to subvert a genre, you have to actually subvert a genre. Just intending to do so is not enough.
How would Starship Troopers look if it managed to actually subvert the genre according to you? My first association is Gilliam's Brazil (or a Dark City that is a planet) - but wait, that's a whole 'nother genre of its own. What do you think?