I would add to the last sentence "Openly mock any expert who tells you what you should or shouldn't like based upon their own set of unwavering assumptions or personal preferences, and work to minimize the role of these biases in your own thinking and purchasing decisions."
In a former life I knew a guy who taught wine tasting courses on cruise ships. Before the class began, he'd pour different wines into identical, unmarked glasses. The people you might describe as "posh" would sometimes refuse to form or articulate an opinion as to which wine they liked best until they knew enough information to infer the price tag. Being awesome, he would completely lie, and trick them into admitting to a love of Charles Shaw Merlot and disdain for some sunken-ship wine from the top-shelves. Then after "correcting" his mistake he'd sit back and watch the cognitive dissonance in action.
But the REAL wine aficionados (in his opinion) didn't care. If they liked Carlo Rossi the best, they'd drink that and pocket the difference, not caring what any supposed expert thought of them. If you can get the same pleasure from an SX bass as a Sadowsky then BONUS! Extra beer money!