I think you mean a "moot point". "Moot" means irrelevant. "Mute" means silent. (Which I should be more often!)
I attend a GOA church. It is a common pious practice to take home pieces of the antidoron, dry them, and eat a small piece with a sip of Holy Water at the time of morning prayer. When the level of water in the container drops, fresh water is added. Otherwise the faithful would show up with gallon jugs at Theophany and the font would need to be a vat!
Many of the commemorations during Proskomede are for reposed Orthodox Christians.
When I submit names , I indicate if a person is living or reposed, Orthodox or non-Orthodox. Then my priest knows what to do for each person.