I agree that AI have risks specifically because of memetic monoculture, in that while they can come from many different providers, and each instance even from the same provider can be asked to role-play in many different approaches to combine multiple viewpoints, they're all still pretty similar. But the counter point there is that while multiple different humans working together can sometimes avoid this, we absolutely also get group-think and other political dynamics that make us more alike than we ideally would be.

Also you're comparing a group humans vs. one AI. I meant one human vs one AI.