[thefz]

Until the code you poorly understand produces an incorrect output and you don't know where to start debugging it

[franktankbank]

Vibe coding shouldn't replace seniors but maybe its not a bad on-boarding in a low stakes environment?

[pllbnk]

Worse - you use that incorrect output because you don't understand the code that produced it. You base your decisions based on that output and then other decisions based on the previous decisions. At some point you realize that something doesn't make sense and either you return to the initial output or don't know where you took the wrong turn.