https://medium.com/@jimmysong/why-blockchain-is-hard-60416ea4c5c

Second, blockchain is a way to look like you’re on the leading edge of technology. Like it or not, the word “blockchain” has taken on a life of its own. Very few people actually understand what it is, but want to appear hip so use these words as a way to sound more intelligent. Just like “cloud” means someone else’s computer and “AI” means a tweaked algorithm, “blockchain” in this context means a slow, expensive database.