5) Mike's insight: why don't we ask ourselves this question: "what do most people have one of and would find exceedingly difficult to have 10,000 of?" I guess some answers might be a house or a car or something like that... but Mike added the additional condition: "what do most people have one of and would find exceedingly difficult to have 10,000 of and *which they can prove they have over the internet*?"
To be fair to those of us on the more sceptical side (but who remain civil), this is not really a matter of insight.
Sorry - not my intent to imply a lack of insight elsewhere!
And I'm acutely aware that my write-up is based on two-day-old recollections so apologies for the sketchiness of some of it.