The phrasing in this article is pretty annoying.
It basically loses all credibility by using sentences such as
"They need to see your reasonable opinions and your thoughtful responses to their own, often unreasonable ones"
It can be verified by the client [1] (wikipedia link also has RFC source), but typically the verification is done by the resolver, which introduces the problem that a client has to trust the resolver and the network from resolver to the client (last mile problem)