LB: One can only eat these type of matzos on Pesach if they have a specific tradition (minhag) to do so. You must consult a Rav.
Actually that is the tradition, the Hard cracker like Matzas we eat today are actually a new invention as they last longer and are easier to box.
Most people do not bake their own matza, so the bakery does it and they need to do it in such a way that it lasts a while
The Soft matzas do not last very long, they get stale like bread