If you're building "production ready" stuff with logins for Other People and god forbid taking payments, yes you definitely must understand what the code does.

But when I'm building a tool that tags random meme reaction .webm files and finds duplicates from them, I couldn't care less what the quality is or if I understand what it does.

I can easily run it, observe if it does what I want and Vibe harder if it doesn't.

tl;dr vibing prod code = bad. vibing personal tools = good.