Understanding the technology is a requirement for judging whether Bitcoin's progress constitutes a bubble? Why? I don't expect a doctor to understand the science behind CT scans, just be able to analyse the output.
You have to have understand why the hype is false.
Bitcoin is touted as a paradigm shift in digital technology. You have to understand what is involved in finding the hash number for the ledger, how the ledger is constructed and distributed, what the constraints are in power and speed, what the capital costs are to mine and maintain, how ongoing costs per transaction are calculated, how secure the keys and the exchanges are. And so on.
But you are quite right that one can analyze Bitcoin from an asset, price, valuation, demand and trading point of view. One then finds that money is transferred to the exchanges, the miners, and the people who got in first. As many have pointed out, when the new buyers stop buying the exchanges will stop paying out and run.
Once stories of people losing their shirts and their houses and jumping out of high buildings then the panic will set in on cryptos.
There initially was a use for transferring money, and laundering money, but the governments are already acting to stop that.
With no functional value to society and no underlying asset value, cryptos will go down in history as a phenomenon.