That way you teach them that

• you are somehow a magician
• they can ask for any stupid thing and you will do it right away for them because what else should you be doing
• it doesn’t matter if this feature even fits into your plans because all you want to do is grant every wish
• a new feature is written and will appear instantly at the users computer. Who cares about testing or of this breaks other features as long as this guy is happy

They are beginner devs, so they should learn to understand how things work.