You're right, sorry. Most typos should be fixed now. I made the translation into English in a rush and didn't think of running it through a spellcheck beforehand. Thanks for reminding me!
As explained in the text: the point isn't that these problems aren't solved by blockchain, they're amplified. E.g.: scams existed without blockchain, but now they're forever and permanently engraved into the blockchain. Code was always flawed, but now a bug isn't just a bug, it's a bug in a smart contract with potentially disastrous consequences that can never be properly fixed.
Obviously, if you just reimplement SVG in JSON it's not going to get better, there would be far more to it. And I'm a big fan of strong schemas, it's the best part of XML.