> Every, single, time
No, it really doesn't.
The wisdom of the crowds has some domains where it's good, and others where it's bad.
Bandwagons, groupthink, whatever you want to call it, that effect is also real. If I pick a random person and ask them what they think the "basic truths" of COVID are, 20-40% of the stuff they will say will still be false today — it just doesn't matter any more that they're wrong.
I feel this should be easy to spot by having two large populations that hold mutually incompatible beliefs, such as the way Americans love the 2nd amendment while the UK bans not only guns but also knives in pubic without good reason.