alkali silicate rocks (forms clays and expanding metal surfaces) , ores, lotsa sulfur, and water are all ingredients that our planet exploited . And it happened more than once till it finally took hold. We can prove it DID happen, but that has no credence in being a real thing or that it WILL happen elsewhere.
On A2K, we are mostly entertaining each other, were not in a technical conference.(Everyone has certain skills and experiences not always compatible with the evidence's importance). A really technical discussion about, say, abiogenesis, would be rather dull unless someone is good at stories rife with analogy and accurate evidence.(and they understand of what they speak).
I generally give a pass to anyone with deeply held convictions if theyve got SOME well reasoned evidence somewhere within their discussions.
The "inevitability" crap is more of what guys like Gould would hve said, or Kaku when they were on "Discovery Channel", not among colleagues and students.
Most scientists would keep these utterances to themselves for their own research favorites..
Its entertainment. not science.