The price thing happens for literally everything. People infer the value of things from the listed price, which is why everything in a department store is perpetually on sale and why you should set pricing expectations higher than reasonable when negotiating a sale or an hourly rate. This isn't a critique of wine, it's a critique of the human psyche using easily-manipulable signals as shortcuts for inferring value. I have yet to find a person who actually believes that a forty dollar bottle wine is likely to be better than a fifteen dollar bottle of the same varietal or anyone who would judge someone on the price of the wine they're drinking.

"The Color of Odors" is pretty much just another issue with our brains synthesizing multiple signals to come to a conclusion. If you drink a wine that's colored red, you're going to start with the assumption that it's a red wine and work from there. This works as an exceedingly-reliable heuristic: the average number of times someone is trying to trick you about what type of wine you're drinking per drinking session is effectively zero (and the consequences thereof are roughly zero as well). You've ran your own experiment with N=6, but brown-bag tastings at wine shops aren't exactly rare and amateur enthusiasts are generally in the ballpark with many of their guesses.

Different tasters will rate a given wine differently because taste isn't objective. But it's not subjective either. It's a composite of both. They'll comment on "subtle notes of chocolate" because wines—like beer, coffee, and everything else—have tons of flavor compounds. And they're made of more than just grapes or yeast; barrel aging imparts yet more flavor compounds, and the specifics (oak, steel, level of char, type of oak, if the barrels have been reused, etc.) add yet more variables. I'm not saying that some of it isn't bullshit (https://xkcd.com/915/), but it sounds like you're trying to make the point that all wine could just be replaced with Welch's and vodka and nobody would be able to tell the difference.