My argument has evolved to the extent that I've been able to pin down what my gut misgivings have been. I don't know that my position has changed so much as I continue to drive towards clarity.
Thing is, I hate being wrong -- and my goal is to be wrong as little as possible. This means constantly challenging my own positions so that I can discover their limitations ASAP and change them early!
You are right, I'm not a fan of cryptocurrency of course, however, I'm always open to changing my mind.
I see the froth in the market, I see smart folks trying to staple blockchain to anything that moves for thirteen years (!!) and I see no solutions that achieve anything in the real world more efficiently than classical solutions. Folks will say it's fine, that it has other intangible benefits like "censorship resistance" and "decentralization" and "trustlessness" and my explorations have focused on 'given that it's slower, less efficient, etc, do it's intangible benefits make up for that.'
And thus far, my conclusion is no - and I can speak to that. I learned an awful lot about the space, about cryptocurrencies, about blockchain and thus far I've found a pretty naked emperor. And a lot of really fun technical challenges! I can see why tech folks love it.
Thus far what I've seen is a sea of the same old scams that traditional finance law seeks to eliminate given free reign to take advantage of the least well off. And several new kinds of crime invented along the way - like ransomware. I see an entire country of electricity wasted on hashing random numbers while the ice caps melt. I see 100g of e-waste per transaction thrown into a pile, then buried because e-waste isn't actually recyclable. And a pile of cargo-culted trivially disprovable arguments about voodoo economics.
Either way, have a good day ^_^