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So instead of people saying that Bitcoin is inherently worthless all the time, maybe we can just agree that it's going to take a lot longer than ten years and a lot of swings both up and down in the price before we start creating enough of a "heritage" to come to an informal consensus on how much they are worthThe history of non-fiat money (like gold) is that of candidates being knocked off, practically never added to, the list. Over time, new financial technologies (e.g. better refining, bimetallism, paper money, central banks, deposit insurance, et cetera) were demonstrated to be superior to gold (and its subsequents) in the context of a growing modern economy. People debated--extensively--each shift. Rational arguments were put forward, tested (and rejected), refined and, when fruitful, propagated.
Each of gold --> bimetallism, commodity money --> redeemable paper money, redeemable money --> "backed" money and backed money --> fiat had a rational argument (and demonstration) for their transition. Those arguments are one way; they don't work going backwards.
Gold remains as a legacy, a memory of where we came from. It's here, and has been replaced. (Analogous to old programming languages which remain in light use because of legacy code. You wouldn't clone their obsolete elements, justifying said clone with the legacy language's use.) There is no argument for "neue gold" because the same arguments that worked, cumulatively, over the centuries as society progressed, against gold work against the new thing. The comparison to gold is one of false equivalence; hence the fallback to "whatever we feel it's worth."