I see it having its place.
The benefit of consulting a large group of end users is that they will together have, in total, more and wider experience and knowledge about the use and application of the product than any single retailer will.
If your intended use of a product is at least slightly unusual, it is great that the retailer tries to put you in touch with a large number of users, because someone else may have tried just that.
It should not be used to replace answers from someone on staff who is familiar with the product manual and the usual uses of the product.
But then the shop in some ways turns into a cooperative. And those have a different price policy as shops aiming at maximum profit.
Also these days we had a discussion here of the labour policy of B&H. I'm not sure B&H would like their "shoppers" involving themselves in that as with explaining their goods.

