I understand that packing the coffee in a moka pot is a real faux pas
Just make good coffee, and stop using those pod abominations.
"Packing" definition doesn't require stomping although it's often applied, both with coffee and suitcases.
"faux pas: an embarrassing or tactless act or remark in a social situation"
I can't work out how packing the coffee in a moka pot is a faux pas.
If a guest is invited into the more intimate areas of the house like the kitchen, (food safety issues aside) they can no more object to what they see than a theatregoer given a backstage tour could complain that the actors are out of costume.
My brother, I can assure you that this is not actually how that works in the real world
If I'm having the queen around for high tea it might be a "faux pas" to serve biscuits in a plastic packet or tub, and proper to arrange them artfully on a china plate. But if we're following that ritual, the queen absolutely does not enter the kitchen.
If on the other hand the guest wants to engage in the "we're just regular people" ritual they gain the right to enter the kitchen - but lose the right to complain when the biscuits are served straight out of the packet, or to use the term "faux pas"