[checks title again] Alright OP, you asked for “Hated”, vs. “worst”, per se, in your title. You got it…
There’s movies which are simply badly made, or plotted, or acted, and our displeasure at those is understandable…
But it’s the ones which are so horrendously misconceptualized in their genesis that truly get my goat.
Take Starship Troopers. [please] OK, people insist this is a satire. The good satires that I have watched have subtlety, wit, and depth, even as various insanities and silliness march across the screen (Dr. Strangelove is a good example). This just relentlessly whacks you over the head with its Anvilicious message from start to end, from the idiotic characters to the brain-dead tactics (as such) to the ham-handed attempts at depicting the most pathetic propaganda imaginable.
Maybe the fact that there is no Sane Man in the film, who is or becomes aware of just how fucked (up) he and his society is, that is one of the problems. Such a character often has served, in better satires, to lampshade all of the lunacy happening around them, even if they in the end are thwarted in their attempt to either defeat the corrupt society they find themselves in, or to at least escape it. Adding such a person would have allowed the material to breathe, providing even more of a contrast between the craziness they find themselves in and the character’s all-too-aware horror at the situation they find themselves in.
But here EVERYONE has bought into it all, nobody rebels, nobody is aware of just how massively hosed they all are, even as the bugs tear their platoons and bodies apart. I guess I didn’t understand the point of the tactics, or the invasion itself: when I saw the opening clip, I didn’t grasp how ANYONE could believe that space rock could have been launched by a non spacefaring species from halfway across the galaxy, a trip which would have taken many millions of years…oh, it’s meant to be a propaganda film you say. Whee. Not even the looneys running this society would have wasted time, lives, and effort on invading a planet that far away. Or anything else depicted in the film, even from a meta-perspective.
There may be “worse” movies out there, sure. But if hated is my main criterion for this thread, then I don’t think I’ll ever see anything to surpass this abomination.