The only part of being a "coffee snob" that I personally respect is the concern regarding the origin of the coffee itself and the conditions of the workers farming it. I'm not interested in the intricacies of what beans are used or what soil it has grown in, but I think there's a case to make that if you're buying Nestlé instant coffee and taking some kind of contrarian pride in that, you're at least partly proud of also not giving a shit about other people or how the things you consume affect our planet. That's of course up to every human to decide, but I don't consider it a very sympathetic trait.