According to popular opinion, yes. But there are many different forms of writing, varied by type, genre, style, fiction, and non-fiction. And, much like intellect, there are writers who can't string together a coherent sentence - of which, I happen to be.Does the ability to write make you a writer, like the ability to speak make you intelligent? (As a side question: Is there any one who like Jar Jar Binks?)
Aren't you stretching things a bit?