It's quite difficult to have something so precious as Gold to become the standard of money again, and even if it turns out to happen one day, it's not going to last long before we're subjected to the same shananigans of endless money creation, debt, inflation, etc. As long as the same governments are responsible for creation and regulation of monetary policies, we're not going to move forward at all.
I like that with Bitcoin we don't have to wait for a new monetary system, it's here already and we're using it. Yes, it's priced against the us dollar, but so what? It works exceptionally well and it provides an indication of value, which is extremely hard to do when you start from scratch.
Another problem is that governments going back to the Gold standard will never be able to fully back every single unit because a lot of their Gold is stored in other countries. Not your keys not your Bitcoin is similar to not your physical Gold = you have no Gold. They're way better off hoarding Bitcoin because it's much easier to store. You can store trillions of dollars worth of Bitcoin in a $90 Ledger Nano hardware wallet.
I agree with everything you pointed out. Even if there was a movement among the governments to go back to gold standard to break the dollar's hegemony, it won't last long. Even if there's enough gold in each country's treasury to back the fiat, they'll want to keep on printing money. It's an addiction.
Of course this is not an issue with bitcoins (though some would argue that forks fulfill that want for money creation) though only time will tell if it'll be enough to compete with whatever new currency becomes the world standard.