I think one of the problems with "All the gear, no idea" in any field is where they believe the purchase of expensive kit makes them an expert. So you get people who have read a Cycling Plus and gone out and bought a £4k Cervelo and a load of Rapha gear. So far, no harm, no foul. But they then pull up to a novice in difficulty and rather than say "Sorry can't help you, I'm new to this myself" they say "oh yes what you need to do is this, this and this" when really they haven't got the faintest idea. Unfortunately novice sees expensive kit and lovely curvy carbon bike and thinks "Oh he's an expert I need to follow his advice". Now this might lead to something harmless like buying some useless tabs to stick in their water but at worst it could lead to dangerous modifications to their bike. They don't know that Cervelo guy gets his bike shop to change his punctures and follow his advice on how to tighten cranks up to the letter.