Fortunately many people in this hobby trust their good dealers and have good systems, enjoying music. WBF members have a different, very extreme way of living this hobby.
I do not see a sewer filled with mis-information in this hobby. Surely a lot of mis-information, particularly because of the extreme diversity of equipment and preferences, added by the complexity of analyzing systems. Everyone dreams of "information to make informed decisions, such full understanding of trade-offs and weaknesses of the design choices," but IMHO such thing does not exist.
Looking around WBF I see many happy people, living their hobby with their systems, music and friends.
As far as dealers go, if you find one you trust, trust but verify.
Remember, there are incentives at play. The guy may want to take a nice vacation
Instead of you and your family.
If you don't see misinformation, or at least incomplete information, I think we are in deep, deep doo doo. How many individuals who write about provide the weaknesses of gear? Virtually no one, other than Fremer and Yoda Valin. They are trusted advisors and everyone else is lying by omission, in effect writing marketing materials for the impotent manufacturers. Valin and Fremer are true trusted advisors, while virtually everyone else comes across as pathetic charlatan.
And finally, remember, WBF is only a small part of the market and is not fully representative of all of the participants of the hobby. It's "naive realism" to assume all other hobby participants have as much knowledge as WBF participants . (Naive realism means falsely assuming that everyone sees the world as they do, because they see it in an objective way while everyone must see it the same way or else is wrong/ idiot... And just because something is good for the Naive Realist, it is the absolute truth for everyone else.)
But High end audio is a subjective experience, and no one has heard every combination of gear. People rely on others to form their opinions and what to explore. So it is prone to influence. For those who truly want to understand how this industry operates, I highly recommend a book by Cialdini called Influence. It's out in an updated version. I am too lazy to post the Amazon link, but here are some quotes from Nobel Prize winners about the book:
“Robert Cialdini has done the impossible: he has improved a masterpiece. The new version of Influence is a marvelously rich and engaging account of the subtle power that people exert on each other.” -- Daniel Kahneman, Nobel Prize laureate and author of Thinking, Fast and Slow and Noise
"In this update of his classic book, the world's most practical social psychologist shares his wisdom and reveals his charm. There's dynamite here. Please use what you learn with care!" -- Richard Thaler, Nobel Prize laureate and author of Nudge and Misbehaving
PS. also highly recommend Danny Kahneman's book thinking, fast and slow. His (and Tversky's) Prospect Theory about how people judge losses and gains explains why so many buy a wilson or a magico , instead of Gryphon speakers (or other smaller/ less popular speaker brands), or a hifi-sounding Pass amps instead of the smaller but more natural-sounding Wells amps.