Ok, but real coffee drinkers don't use paper cups ...

They do when they are at work. People don't carry a tumbler when they go to the movies. There are starbuck's what do you call groupies and alike. The pods produce a lot of micro plastic too.

Years ago I looked for all stainless coffee maker and even the most expensive ones had plastic parts. The drip mechanism for all of them had plastic parts. I don't know if they have changed or not.