That sounds like a fallacy of composition to me.

That some element of the world is dystopian means the world is therefore dystopian.

And if the world is dystopian, then every element of it is dystopian: no element of the world is not dystopian.

It's an interesting "poison the well" type of argument, but it also means that if one accepts that all of human history has had dystopian elements (chemical weapons, slavery, feudalism, etc etc), that therefore the world has always been dystopian, and that then therefore everything in the world has also always been dystopian. And you've created a label that includes everything that has ever existed and excludes none of it, which is meaningless.