It's really high time someone does a classic 4-chan style troll on these sorts of people. The "it's ok to be white" campaign was massively hilarious. I'm thinking something like adding the French Pride flag and just having it be solid white. Super straight had potential but unfortunately it got squashed on social media so I think you've got to slide this stuff in IRL under the radar and just wait for the inevitable blow up. Or perhaps a good old fashioned phone prank is in order. Maybe a pronoun assistance hotline where you put people through a rediculous circumlocution auto phone operator that never goes through to a real person.