As usual, it starts with bad definitions of a good concept.
James Surowiecki is "The Wisdom of Crowds".
That is s big distinction, as the former implies that there is one large "crowd" (usually equated with the Internet) that is "wise".
Whole generations of apps have been created with exactly this idea as their basis. "The Crowd" willl somehow magically infuse Wisdom into our world.
That's what unwise crowds seem to have made out of it, in a supreme twist of irony.
1. Diversity of opinion
2. Independence of members from one another
3. Decentralization
4. Effective ways to aggregate opinions
Without these, it is an unwise crowd, and at worst a mob.
Let's go over them:
Each person needs to have his or her OWN opinion. It can be informed or uninformed. As a group however, it needs to have at least SOME accurate information available.
People's opinions need to be independent from the ones around them. They must not have a conflict of interest, so to say, of whatever form.
People should be able to specialise and have access to "local" knowledge.
I would take "local" here in the broader sense, not geographically. To a biologist, knowledge of biology is "local", too.
The group needs to have a way to turn their private opinions into a common one.
"Just ask the crowd" is the worst way to conduct your business.
If Apple had polled "the crowd" it would never have produced the iPhone.
Crowds can be very wise indeed, but not ALL crowds.
Twitter polls, voting on the blockchain, "decentralised communities": useless unless the above is taken into account.
Crowds that don't want to aggregate opinions but just push one agenda are lobby groups: horrible things.
Crowds that cannot form or are not allowed to form their own opinions are harassment groups.
It is certainly possible to get them. But as long as influencers keep using them the uninformed way, I will keep ridiculing them for it.