Supposing an answer like the above could spring up, the next logical question would be: Why did Anunnaki want the gold? Why did they considered it valuable to go to all that extent where they would have to engineer an entire species just to mine it with primitive means (instead of applying high-tech and extracting it on their own in a much better fashion)?

It's a "design" issue but not related to any human or ET species.

As scientists zoom to examine the fabric of reality, they will find a universe constructed of information and code - which will inevitably lead them to the conclusion that this is a reality construct, similar to a designed game reality that we create for PC games or other types of simulations.

That reality construct in which we live has variables and constants - many of which have already been "mapped" and are currently in our physics books. Whoever designed / "coded" this reality, used two constants regarding what will be considered value by those immersing in the reality. These two constants were gold and silver. Any human plan to bypass the fundamental "coding" of this reality is simply humans trying to play "god" (ie master coder) and replace pre-existing constants with their own.

This will inevitably lead to problems regarding any replacement scheme (whether it is paper money, copper or nickel coins, electronic money etc). All of these have fundamental flaws and collide with the basic design.

For example paper money is issued as debt to have any form of value, since it's backed by nothing else. So it is given as a loan repayable with paper currency + interest. Thus at any time paper currency is less than the actual loans that are expected to be repaid = endless inflation otherwise the prior debts cannot be repaid without issuing new (and more) paper currency. It's a ponzi scam that needs constant inflation so as not to collapse.

Due to paper price affecting the inflation, copper or nickel coins appreciate more than their face value and are thus forced out of circulation by melters. In other words, the currency loses so much value that the metal of the coin exceeds it (!) in the long run (typically 20-30 years).

Bitcoins have 51% problems, they are not as future proof as gold, etc. It's not a tech that can endure 100-1000-10000 years. It can however effectively troll the bankers imperfect systems and compete with their bullshit money and payment systems. How can they accuse Bitcoin that it's backed by nothing, when they themselves back their own paper by nothing? How can they accuse it of being a ponzi when they are running the biggest ponzi scam (ever) with the knowingly-impossible-to-be-repaid loaned paper money? How can they accuse it of being worthless when its a scarce and rare resource compared to their own endless supply of paper money? Even as a payment service it is faster and cheaper than their bank wires/paypal/visa crap.

On the other hand, the only two real problems of gold and silver are

1. the logistics : You can't carry too much of them with you. Being divisible is not an issue for small denominations (that's why there is silver).

Silver coins = small denominations
Gold coins = large denominations
Gold bars = large money transfers

2. fast transactions in a global / worldwide economy that render long-distance-trade problematic and require gold-silver based equivalents for transfer. For example wiring or paying with a VISA or paypal through a gold-backed currency would solve the issue. The recipient would simply go the bank and cash out his incoming payment directly to gold and silver if he so required.

While we are running a paper money system, gold/silver also have price suppression "problems" but that's not inherent on the metals, rather it's due to the inherent instability of the paper money scam that must be preserved by artificial lowering of gold/silver prices through trading enormous quantities (again on paper) that do not even exist, in order to fix the prices.

I don't quite get the gox-is-bad-I-told-ya attitude. The current gox situation is hurting everyone involved in or holding bitcoin, even more so all the fantastic entrepreneurial ideas here. So whatever has been said back then was apparently not loud or clear enough or presented at the wrong channel to prevent the massive damage to the whole system that we're experiencing right now.