Your subjective experience is not evidence of a trend. I have the exact opposite experience. I very rarely use gold to purchase anything because gold has even less use than dust due to said economy being screwed up. Any time someone not in my guild wants to make a trade they do not want to make it in gold. They want to make it in dust or embers.
Just because I have never purchased a pair of roller skates does not mean roller skates do not exist. I would have a difficult time convincing the local roller rink that their business does not exist. Just because I live a farm and never engage in commerce does not make the dollar worthless. Your entire argument is predicated on information that does not match the current reality of crowfall.
Dust has consistent value because it is a component used in all crafting. Every character needs to either craft items for themselves, or have those items crafted and thus, every character needs dust unless they decide to limit themselves to non-crafted items permanently.
You require people to post gear on vendors for gold to have value. The moment there is nothing on said vendors, your gold is useless, and this happens rapidly due to there being no compelling endpoint for the currency. It requires, at a base level, someone posting items for gold that they don't actually have a way to spend. Due to lack of properly implemented sinks gold has no intrinsic value, only assumed value, and this is why it has failed repeatedly as soon as its temporary sinks are paid. We saw this when it had great xp ratios. The moment most people were done leveling characters, it became practically worthless, the vendors started vanishing, and those that remained saw extreme and rapid inflation due to the freefalling value of gold until the items that remained were of such low quality and high cost that they were essentially unaffordable for anyone that didn't already have a giant pile of unspendable gold.
You only require gear to be a necessity for dust to have value. The moment nobody wants your dust, it is still useful to you. Because its primary sink is a crafting component used in all forms of crafting, dust has intrinsic value to every player. You will not run out of uses for dust because the things dust builds need replaced constantly. The only use for gold that functions this way is the saddle, and it is cheap enough there is no real compelling reason to acquire large liquid sums of it. someone can farm up a new saddle themselves in less than a half hour.
I have plenty of faith that ACE is working on adding the appropriate sinks and necessary purchases to make gold valued by the majority of players as the default currency. However, as stated and in the present context, your argument denies both the reality of the current in game economy and the basic principles of supply and demand economics, and thus has no merit.
I know you really wanted a mic drop moment here, but this ain't it.