Whatever...I think that it's a shame that the majority of people in their early twenties can't even sign their name using cursive and it be legible.
Anyone who has taught preschoolers knows that they have letter recognition before they are writing their letters. Additionally, don't tell someone who can't use their arms, or someone who is blind that learning hand writing is "Essential" in their development. They might as well throw in the towel before they begin school.
I thought this was an article about whether cursive should be taught not about whether writing is important. That being said...
There is also a comment about brain connections. Experience is key for the brain to get rid of connections it does not need, and experience is key for the brain to create connections it does need. Children will learn to recognize letters whether they are writing using pen and paper or on a keyboard. The brain will make necessary connections and adapt to new demands in the environment.