"Using [your] brain" is key. And your brain has to understand software engineering in the first place, before you can use it. In my project, the product manager has recently tried his hand at vibe coding. LLM produces what you would expect it to produce and as described in the article: ok but not robust code, and fast. So now he thinks he knows how fast coding should be and has gone light speed on the product, expecting engineers to produce high quality software at the speed of LLM-produced "ok code". And it's hard to keep expectations reasonable when the world is all a-hype about LLM coding.