There are lots of uses that don’t depend on external data. The general “digital payments” use case, for example, just requires tokens to be transferred between two accounts on the blockchain itself. People then make use of that information externally however they like.
There are also ways to get external data onto the blockchain in a manner that is reliable enough for some particular purpose or another. A lot of game theory goes into that sort of application. Stabletokens have price oracles, there are prediction markets, “proof of personhood” protocols, etc.
The important things to consider are:
- Blockchains are not ideal for every single application, and that’s perfectly fine. Use the tool that’s best for the job.
- On the flipside, if you’re not familiar with a field then there are probably a lot of nuances and existing applications that you’ll be unaware of. So don’t be too quick to dismiss it either.
This applies to pretty much every field of technology.
I have little to say about this because it’s basically nonsense.
These two statements are completely incompatible with each other, for example. Also, the top 100 accounts only holding 35% of the network is remarkably good. And Lido is not controlled by a single individual or organization. And holding 51% of the stake means nothing on Ethereum, it works differently from Bitcoin. And the Gini coefficient is something that applies to national economies, not to blockchains. And I could go on, but this is just nonsense and you clearly have no idea what you’re talking about.