Valid question indeed! Vibecoding is prompting following your guts. "Do this", "now do that". Misleading word because you are not even coding but asking the agent to do whatever you feel like doing. A more methodical alternative to vibecoding is spec-coding. There's a previous step where you write the specifications. Technology, coding practices, game rules, etc. You formalize what you need and what you want in a bunch of properly indexed md files, so the agent knows beforehand what you want to do and where you want to go. The process is quite similar to what software engineers have been doing for decades, indeed. You write specifications, you implement them, test them, write more specifications if some were missing, rinse, repeat. It's closer to a methodology than simply following your guts.
* so no, it's not because I'm a computer engineer, anyone can do that too :D