alt Hacker News> for example repairing your tractor is illegal because of this same law.
No it's not. There has never been a case establishing that, and it's absurd on its face. The protection measures that the law makes illegal to break must control access to a copyrighted work, and you can't copyright functionality.
You see, they made it so you can't repair your tractor without circumventing a technological copy protection measure, which is illegal under DMCA 1201.