Not that I disagree, but it does make me wonder if this would be one rare instance where American Express which I know is notorious for siding with their custom

Not that I disagree, but it does make me wonder if this would be one rare instance where American Express which I know is notorious for siding with their customers (at least for a time? - my father worked as an accounts payable accountant at a big hotel in Orlando near Disney World and he said American Express was notorious at not paying even with signature if their customer claimed it was fraud) would still side with their customers. Leaves one to wonder if they even take Amex on flights. I still remember them taking my card which I think was a debit card on a flight and shoving it into carbon copy paper and basically billing me whenever we landed. This was late 2000s. From Puerto Rico to Florida.