You made a critical mistake in your opening sentence: you conflated 3 very different things, not a promising start. "Blockchain technology" is just a consensus

You made a critical mistake in your opening sentence: you conflated 3 very different things, not a promising start. "Blockchain technology" is just a consensus protocol, cryptocurrencies are currencies (well, one of them is at least), and NFTs are effectively pet rocks at the moment. I'm having a hard time seeing why that demands a marshalling of all true "technologists"... to do what, exactly? Refuse to work on projects involving those three things? Demand governments coordinate a global round up of those who are presently doing such work? Is this the final form for those that have repeatedly declared bitcoin dead - year after year, growing more and more furious as they calculate how much their terrible opinion has cost? Name one technology that was successfully eradicated by astroturfing and legislation, instead of genuine market forces. Now, if you somehow manage to do that - were the users of that technology compelled to act against their own interest in service to jetsetters gathered around Hillary Clinton in Davos Switzerland? Because that is exactly what you'll need to do in order to get your way.