Kellyanne Conway, as heard on CNN a little while ago, talking about Donald Trump’s preparation for his State of the Union address: “He Sharpied up a lot of the passages.”
I think that declining ability in cursive might be better explained as a matter of writers’ lack of interest in, or lack of care for, the handwritten word.
“Using fountain pens for years makes me realize how light this pen is — too light, really. But I’m enjoying the opportunity to commune with my disposable past.”