Part of the reason is that while we can inspect esrogim, we buy sealed boxes of matzos. So we cannot see that the matzot therein are unburnt. And there is a great likelihood that a matza will get burnt, because they have a chumra deAti liydei kulla, a stringency that leads to a leniency. As Rabbi Tendler notes, nowadays they bake matzas in much hotter ovens than they used to, for fear that it would become chametz. And since the ovens are so hot, they cannot leave it in too long, or else it will get burnt to a crisp. And therefore they bake them in 2000 degree ovens for just 25 seconds. Any longer and the matzah gets burned. To cite an article about this:
"The whole process takes 18 minutes from mixing to baking, no longer. Otherwise, there is a chance the flour will become leavened and start to rise. That's another reason why we poke holes in the rolled-out matzah before it is baked for 25 seconds in a 2,000-degree oven."Rabbi Tendler is of the opinion that 25 seconds is not long enough to cook the dough inside the matzah, even in such a hot oven. And then they remove it from the oven. So he is of the opinion that such matzahs are likely to be chametz. In the past, they used ovens at a lower temperature for a longer period of time, such that both inside and outside would be baked. And he bakes his own matzahs at this lower temperature.
While I do not hold by this shitta of Rabbi Tendler and in fact I eat these hand-matzahs (though I do not know enough about the scientific process of baking and chimmutz to know one way or the other), it is a good example of how people in all ignorance, yet well meaning, set out to increase the chumra level of something but actually end up with a kullah, or a michshol.
At any rate, in such a hot oven, of course a bunch of matzas will get burned. We've encountered cases in the past in which an expensive box of matzas had maybe one or two that were not charred, or had burn holes, and did not taste good at all, or were broken. I am not making a halachic statement about this (all sorts of factors can come into play), but on a conceptual level, it is hard to see how this is not theft and cheating one's customers.
The solution may be to buy and use SoftMatzas, like I did last year, but more about this in a different post, bli neder.
At any rate, 30 days before the chag of Pesach, when we start learning the halochot thereof and such that it is in our minds, it might be a good idea to address Hashem and ask for kosher, tasty, and non-chometz-dikke matzas. You can say this in your own words, or you can use the following nusach, based on the nusach about esrogim, and tell people you got it from the Ri me-"Josh."
So, say the following on Purim:
May it be Your Will Hashem our God, and the God of our forefathers, that You bless all of the matzah ovens to send out their matzot at the proper time, and that they shall send out matzot that are good, nice, beautiful, and clean from all cracks, char, chametz and folds, and that they shall be complete and they should not have any deficiencies. May these matzot be available for us and for all of Israel in every place that they are, in order to fulfill the mitzvah of eating matzah on the Holiday of Pesach, that shall come to us with good life, and with peace, as You have written in Your Torah by way of Moshe, Your servant, "Seven days shall ye eat unleavened bread." (Shemot 12:15)