This anon always knew "regular" people were asleep and couldn't accept the truth. What you learned here has been known for decades and for some with family history for centuries.
Don't crouch, stand tall, just don't engage in silly banter and when an opportunity presents itself for a breadcrumb of truth, drop it as if it is inconsequential. Your "regular" people will pick it up at a slow but steady rate until they reach a tipping point on their own. Only then can you start to engage in a moderate discussion of uncomfortable truths.
They will go through the stages of grief after awakening, be there for them !