I don't think anyone "blames the coffee", but rather identifies the coffee as something that could easily be downsized (by simply not drinking it, making it at

I don't think anyone "blames the coffee", but rather identifies the coffee as something that could easily be downsized (by simply not drinking it, making it at home, or switching to a cheaper preparation). When you add in tips for the baristas a year not drinking coffee could be worth a month's rent, which is not insignificant.