And whether you care about them or not, they have access to your kids, your neighbors, your friends, your family, anywhere that social media promotes them, and you can't turn them off.
Our relative isolation was our best defense against destabilizing ideas, but we can't see inside the algorithms, and these people aren't teaching alternative value systems or ethics and civic behavior. They're role models for exploitation, preying on algorithmically selected vulnerable demographics.
And not seeing them doesn't mean you're successfully attenuating their reach, it just means that you're being excluded because you're not their mark. They know who they're looking for, and they know how to recruit. That's what we're up against.
Money is socially constructed, in that if everyone decided money was worthless tomorrow then it would be. But today, I still need money to eat, or have housing. The Law and The State are socially constructed, in that if they were not generally accepted by the masses they could not perpetuate, yet if I break the law today I quite likely will be violently thrown in prison.
There is a difference between acknowledging that something exists and granting it power over you. I would be doing myself a disservice if I actively ignored the existence of religion, for example, because even if I reject the notion that God exists, plenty of other people I interact with will not. And their belief in that fixed idea will affect their perception of the world, myself, and my actions.