The thing is, you could make a profile on Threads as well. You could create your own instance that is federated. It's not like .world refraining from federating would mean you can't view Threads in general. Just like you can still experience FB content even tho they are not federated. No one is stopping you.

But this isn't a matter of right and left discourse; it's a matter of people being manipulated into extreme and dangerous beliefs and actions without realizing it.

I think it is blatantly wrong to enable and promote such platforms and social disease, just like it would be wrong for supermarkets to sell dangerous/defective products.

Someone may be interested in trying some special kind of water, but it shouldn't be sold in stores if it's poisoning people. The shop can't stop someone from doing dangerous things, but they can refrain from enabling harm to come to their shoppers by refraining from peddling dangerous products.

It's like a Medicare insurance firm knowingly hiring a con-artist who has already defrauded countless elderly individuals...

I don't think it's right for large instances to allow dangerous misinformation to affect their users. FB/Instagram have culpability in the real-world violence. The massive amount of unnecessary deaths from covid misinformation. Anti-masking. Overdosing on horse de-wormer...

The admins of these large instances have an ethical decision to make which will have real-world consequences. They will have culpability in spreading radicalism and exposing their users to potential unethical influence by Meta/Threads.

If they federate and it leads to users losing their self-identity to identity fusion to a radical group, that victim is on them. That fractured family is on them. They will share responsibility for radical users trying to foment insurrection or executing their families due to delusional extremism. [1] [2]

They have to decide whether they want to protect and cultivate a healthy community or not. By federated with Threads, they will be doing the opposite.