I think what u/StoneCypher means is that blockchains themselves do not provide BFT.

No. I mean "byzantine fault tolerance is not a real topic at any level in any major blockchain, and coin fans shouldn't be trying to stuff these words into the conversation where they don't belong."

You know, kind of like when they insist things are decentralized, while watching coins get blacklisted by central councils.

From a technical standpoint, a blockchain is purely a data structure in which the authenticity of the data can be verified via cryptography.

No, it's not. If it was, the 51% attack couldn't exist.

This is just something fanboys say. You will never hear someone with cryptographic experience say something like this.

Consensus algorithms like proof-of-work are what provide the BFT of cryptocurrency networks.

This is absolute nonsense, and directly contradicted by the quotation.

However, consensus algorithms are not an inherent trait of blockchains.

This is word salad.

You can absolutely have a blockchain without a consensus algorithm, or vice versa.

Please explain to me how someone would have a blockchain algorithm without a consensus algorithm, in some way that would be different than a standard database-driven eCommerce site.

To me this sounds like saying "you could absolutely have a car without wheels or an engine, that didn't move."

Well that's not really a car, is it?

"But I made it out of a ford taurus!"

That's nice. Doesn't drive, not a car.