When did the actual observation that gold economies are not more stable happen?
The list provided only shows that they also have crises -- it doesn't show how those crises measure (respective to fiat currency economies) in magnitude, frequency and consequences.
Well, go on and make your point then. They seemed pretty frequent, consequential, and high-magnitude to me, certainly comparable to the 20th and 21st centuries (and even the Great Depression began under the gold standard).
Hypothesis: Gold economies are more stable than fiat currency economies.
Expected observation: Gold economies have fewer economic crises and panics than fiat currency economies.
Actual observation: They don't.
Any recession is caused by "expanding production", the whole point of a recession is that it's a correction that happens after a boom cycle.