Has Mike Daisey illustrated how useless ‘man on the street’ interviews are?

Has Mike Daisey illustrated how useless ‘man on the street’ interviews are?

“He was felled by the most dangerous transaction in journalism: the “man on the street” interview. …

“It’s a mess. Most of what you get is useless. When you are fishing — as Daisey was when he interviewed random people outside a Chinese factory — hours if not days can be squandered talking to people who turn out to be uninformed, incoherent, unreliable or even unstable.

“The notion that he could parachute into a foreign country, spend a few days and come back with an investigative exposé — it would be a first in the history of journalism.”