It does provide a value. If people are dissatisfied with something, it gives someone an opportunity to do better. If everyone accepts subpar quality, why bother

It does provide a value. If people are dissatisfied with something, it gives someone an opportunity to do better. If everyone accepts subpar quality, why bother making something high quality? Makers need consumers with the ability to appreciate their product. Complaining together with others is a way of sharpening your and others ability to appreciate something good when it comes along.