Considering the amount of labor goes into growing beans, curing them, and sending them all over the world:
I don't know what the fuck else could be the definition of a luxury, but that's a fucking luxury to have the result of a plant that mostly grows in the tropics readily available to be purchased and used at supermarkets worldwide.
Like, when East India Tea company ruled the waves, did people not think tea was a luxury? Because same deal, the amount of labor involved was gargantuan. It was absolutely the definition of a luxury.
Just because capitalism has made it "cheap" means nothing.
As areas warm up we’ll just move tropical fruit production to areas previously incompatible. We’ll be enjoying the French coffee industry because grapes can’t grow there anymore!