Yes because it doesn't make any sense. Not only is the coffee industry not really all that sustainable, it's completely meaningless to compare two types of resource in entirely different categories.

It doesn't matter how "unsustainable" a medically necessary resource like helium is in comparison to literally any amount of environmental or social damage caused by the persuit of a luxury good.

Also, as a rebuttal to a rebuttal to the idea that canned coffee is still better it doesn't make any sense, because the logic that "coal isn't sustainable" could justify literally any amount of ecological damage in the coffee supply chain, thereby justifying the pods. You could chop down and burn a tree for every sack of coffee you fill, for fun, and it still probably wouldn't be as unsustainable as coal.