I know that varies by region, but schoolchildren are generally taught cursive as a faster way to write. It already requires some memorisation with some glyphs being different from block letters. Why not make an additional step and completely replace it with shorthand, making writing an order of magnitude faster?
Hell yeah! Let’s take one unreadable form of handwriting and replace it with another even more unreadable form!!
Its almost like the goal is to teach people to read and write it