Well sure, but if you force feed anything clumsily you can ruin it. We had a nice teacher, and took our sweet time in first grade learning to write the alphabet in first grade. Then it was done. IMO it wasn't "additional material", or material at all, it was part of the fundamental skill set with which to interact with the material. And there wasn't a thought in my mind that it could be any other way, of course you learn to read and write when you go to school.
If you mandate force feeding at scale, then yes, some instructors will do so clumsily -- this is virtually guaranteed, although it is true that some topics are more prone to this than others.
But I think you misinterpreted my comment -- I am not advocating for doing away with schooling or testing understanding in school in general, which is entirely my fault as my post was a bit unclear. But I agree with you that one should learn to read and write in school!
OP used the phrasing "force them", which I read as a stronger statement than "it'll be on the exam", and more "there will be an exam or entire course on this topic that must be passed or else". My point, more or less, was that there are many other more fundamental topics we already do this with other than cursive, and that adding another has a steep cost with uncertain payoff that is heavily dependent on the implementation.
