Okay, I know this isn't the point of the larger article, and that this makes me a literal Comic Book Guy. But, actually, a graphic novel doesn't have to be released as a graphic novel originally, but it just has to be written to be one. The difference between a graphic novel and an ordinary trade paperback bound volume is that the novel was originally conceived and composed as a single, long-form story, rather than being a collection (either a story arc, or just a series of disconnected issues) from an ongoing series.
There are edge cases to this, such as whatever they call the comic equivalent of a stitch-up in book publishing. That's where you take a few stories that were all published separately, and turn them into a novel by adding a frame story, or editing them to seem like they were meant to form a single narrative the whole time. FWIW, those aren't novels by my definition, even if they seem like it, but I wouldn't get mad if somebody disagreed.
I've never flossed three times in one day, if someone did that I'd assume they were a robot pretending to be a human.