In a manner of speaking yes. It reminds me of a quote from one of my favorite films, Good Will Hunting. In a scene with Robin William's character and Will Hunting he mentions that Will can study all about the history of the Sistine Chapel but to actually go there and look up and experience it for yourself is another thing entirely. So I stand by my implication that hands-on experience trumps the advice of those that have not experienced it personally.I agree that nobody should act as an authority on a subject they have no experience in.
Your post suggests that if a person doesn't have hands-on experience, that makes their advice invalid. Was this your implication?