Bitcoin consumes 4,000,000,000 W of power to process four transactions per second. A single Raspberry Pi with a database can do an order of magnitude more on 5W. Think about that next time you wonder if it's a good design.
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That's like saying that a Ford Transit can carry significantly more cargo than a Ferrari, despite being a fraction of the price. BTC isn't a database, or even a financial app - it's an entire monetary system. But despite bad analogy, yes, it's clunky af.
The point is not to compare two fully equivalent systems (because I didn't want to go down the altcoin rabbit hole), but rather to compare two systems that can perform the same *function*. You *can* run all of Bitcoin's worth of transactions on a Raspberry Pi-powered backend.
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The argument then becomes that all the niceties of Bitcoin over a dumb single-homed, centralized system aren't worth the ridiculous overhead. I.e. I don't care how much nicer the Ferrari is, it isn't worth one billion times the price.
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It's apples vs oranges. If all you need is a database then yes, a horribly maintained blockchain is probably the wrong tool for the job. Maybe worth repeating to anybody buying into the current manic blockchain fad: This probably isn't the tool you're looking for.
End of conversation
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