Yes. That doesn't make it a substitute for the real thing. I either use a full ceramic burr grinder and Aeropress setup with some recently-roasted single-origin

Yes. That doesn't make it a substitute for the real thing. I either use a full ceramic burr grinder and Aeropress setup with some recently-roasted single-origin beans OR instant coffee if I only have a few minutes before I have to leave the house in the morning, in which case I do the full brew later in the day. I don't see them as sustainable substitutes any more than tea and coffee are substitutes.