I don't disagree, but it's more about making the point of it's not needed but if you're a big ass nerd or a silly person you may want to learn it. Or if you have well intentioned dumb ass parents that force you to learn it.It's not even worthy of a full elective class - it's not like a foreign language, and it's certainly something anyone can pickup in a week.
And what has become a series of scribbles in my signature no longer qualifies as cursive writing; it's just a distinct series of hand movements translated via pen.
A printed signature certainly qualifies so long as it's yours.