I'm rH negative and I found out today that a deeply blue-pilled family member of mine is rH positive. Even before that revelation, I was convinced that this person's brain is literally physically incapable of processing red pills. It's to the point where they don't even remember some my red pill conversations with them (they've exhibited no memory problems about anything else).
When we reference that Q comment about 99 percent of people needing a hospital, this is what I think of. I genuinely believe some people physically can't understand the truth.