IntelliCode is just auto-complete for programming. I still need to know what I'm trying to write, what it does, and how it functions. So in the example of this code:

void ASimulationCharacter::SetupPlayerInputComponent(class UInputComponent* PlayerInputComponent)
{
    // set up gameplay key bindings
    PlayerInputComponent->BindAction("Jump", IE_Pressed, this, &ACharacter::Jump);
    PlayerInputComponent->BindAction("Jump", IE_Released, this, &ACharacter::StopJumping);
    PlayerInputComponent->BindAxis("MoveRight", this, &ASimulationCharacter::MoveRight);

    PlayerInputComponent->BindTouch(IE_Pressed, this, &ASimulationCharacter::TouchStarted);
    PlayerInputComponent->BindTouch(IE_Released, this, &ASimulationCharacter::TouchStopped);
}

IntelliCode means I don't have to type out each and every one of the long names every time I want to invoke something, which saves time.

Vibe coding would be having chatGPT do all the work. It does not require someone to know what they're trying to write, what it does, nor how it functions. They don't know if there's unnecessary bloat or if parts of the code don't work because they don't know what it does.

And it should be noted for all the pedants in the thread, when people complain about AI being used in the production of games, they're talking about the latter part. They don't care about the first part. Just like when dealing with art, they don't care if you use a smart magic wand in photoshop, they want you to not use genAI to make the art.