I think the key is what you said about “agreeing” fungibility (in a sense) isn’t found in the item/money. It’s what we agree to see or ignore. Both paper and 🌽 are fungible when we agree that they become “new” once they change hands.

I think it’s absurd to try and black list coins; it’s the most slippery slope.

Essentially central authority could blacklist on the basis of whether they hold the coins or not. “Any coin that isn’t ours is fraudulent.” That seems absurd and silly…maybe not so much tho after how toed the line became the past few years.

I do fret for our collective future.