The other side of this is, They're PARTICIPATING.
This is arguably better than an underbelly brewing white supremacist nationalism.
Now that they're ON the platform, their "ignorance" is pitted against more enlightened views.
OVER TIME, better information floats to the top.
Look at what's happening, Antivaxxers have a large population of racists, they identify each other by aligning their racist ideology, They form a social clic of "Bad ideas" Including Antivaxx, They DIE at a large scale. Natural selection at work.
Death is how nature solves problems.