Nobody here is saying you should do this, it is a strawman. Rather being fast means that you can revisit your interfaces 10 times rather than 2 times, spend more time thinking about your names, have more time to write tests, review everything several times before code review so no issues are found etc, ultimately producing much higher quality code.
It seems like you think this article is about "I write code quickly by not doing things properly", rather than "I practice to become faster".
The real "10x programmers" I have known spend practically all of their time deleting and refactoring code. A handful of fake 10x'ers I have met in my career, who enjoyed a reputation of rapidly dashing off MVPs, were stone-cold idiots, one of whom wrecked an entire company with his 10x-ness.