How about we stop using blockchain like it's a thing on it's own and not a concept of which there are many implementations?

Blockchains are an idea, just like atoms are an idea, we don't refer to them as "atom" when talking about the concept. The #1 way to know someone doesn't know what they're talking about is when they use "blockchain" like this. If you say "the blockchain" in the context of a specific cryptocurrency, that makes sense, just like if you say "the atom" in the context of your scientific paper referring to a specific atom. But you can't just say "blockchain" referring to the concept.