Taste can be trained, and to surprising extent. Any person without tasting apparatus injuries may learn to evaluate wine and distinguish good $10 bottle from bad $50 one in a blind tasting.
I enjoy wine, but I also recognize a lot of the snobbiness about it (particularly at the high end) is a mixture of snake oil and rich people looking for a place to buy more status.
I remember some interview on NPR with a wine expert. The host was asking why in all the double blind trials people aren't able to consistently rate wines or even have consistent preferences. The wine expert complained that it's the fault of doing it double blind and 'when they're present with the people' (and likely giving them obvious clues about what's supposed to be good or not) 'they can tell the difference'.
There's good/bad, like/dislike, but there's also true and fraud, high status and low status. Sometimes it can be hard to tell the difference, sometimes there isn't a difference.
For my part, I’m just glad I grew out of giving a shit what kind of music other people like.