This is not true "handwriting," it is a printing of handwriting. This sort of practice is usually imperfect, and the fact that the note is not written at all is generally pretty conspicuous.

Frankly, I think that most people would view this as disingenuous. The whole point of handwritten cards is that their supposed to be, uhhh, handwritten. A printout of something written seems sort of perfunctory, and isn't really better than simply sending a typed note. Indeed, the fact that one is attempting to forgo the work of writing a real card and instead using something like this will just dilute the sentiment of the gesture and appear lazy.