That's assuming the AGI designer even understands what they built. If the first AGI is built via some semi-automated bootstrapping process based on a lesser intelligence, you can't really predict how the resulting intelligence will behave.
For sure, which means it's the designer's responsibility to do due diligence in making certain they do understand it. Kickstarting such a process is not an ethically responsible thing to do, unless they are sure it and its future iterations are aligned.