The burden of proof lies with he who makes grand claims. My counterargument in the face of your lack of evidence is: “Where are all the improvements to my daily life? Where are the disrupting geniuses who go-to market 100x faster than their Luddite counterparts?”

To paraphrase another analogy that I enjoyed, it’s a bit like when 3d printing became a thing and hype con artists claimed that no one would buy anything anymore, you could just 3d print it.

You don’t need 100x productivity to be disruptive. In business 10% gain can be quite enormous. My senior engineers are estimating 25-50% gains. That is a far cry from your 100,000% gain, but very real and meaningful.