This is a tricky one, I feel. Any cultural artifact that will reach a mainstream audience and open their eyes to a minority reality they otherwise might not see, or at least have no insight into, whether that's racial identity, disability, sexuality or any 'otherness', inevitably gets lashed to the mast of the campaign ship.
And to an extent it's maybe a burden that a director knowingly takes on when choosing their subject matter, despite their fundamental role, as you say, being that of storyteller or puppetmaster.
Damned if they do, damned if they don't. And damned in a hundred different ways, by all the different factions competing to have their specific take spotlighted.