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.
Which proves the point that we do not pasken from internet posters who may or may not know what they are saying.
My rav (Ashkenazi), and the rav of our yishuv (Sefardi) both paskened that it’s perfectly fine to eat the Sfardi matza, even if one is Ashkenazi. And yes, the do go stale quickly, that’s why they’re kept in the freezer until they’re needed.
After all, Moshe Rabbeinu and the Bnai Yisrael leaving Mitzrayim didn’t make or eat crackers for Pesach.