According to the dictionary, this so called "fellow member" is almost past the borderline of "idiot".
That's what happens with a wannabe iconoclast. You tend to spit in more faces for other people's reasoning rather than question and break apart. Your ego hides behind your *** while it does the talking.
The simple fact is that anything printed in a mass of pages qualifies as a book or booklet.
The instruction manual that comes with your game is a book.
A strategy guide is a book
A cookbook is a book even though there's no story in there.
A book about State laws is a book.
The Dictionary is a book
The Bible is a book
Textbooks are books
A martial arts book is a book.
A traveller's guide is a book.
Children's storybooks are books.
Comics, graphic novels, tradepaper backs, manga and tankoubon are sold in BOOKSTORES so they MUST be books.
Manga isn't as complex as a novel, but it can have as much chapters. It's a serial that's long running like a series of novels. Though it's mostly meant to entertain rather than teach (actually that's my feelings on books before TV was made, mostly to entertain rather than teach)
I don't know with the "manga aren't books" BS came from but I can already tell you what you define as a book isn't bound to novels.
Because there is nothing TO debate...outside of anime fans manga isn't popular.
What you think is popular =/= what everyone else thinks is popular.
pop·u·lar (p?p'y?-l?r)
adj.
1. Widely liked or appreciated: a popular resort.
2. Liked by acquaintances; sought after for company: “Beware of over-great pleasure in being popular or even beloved” (Margaret Fuller).
3. Of, representing, or carried on by the people at large: the popular vote.
4. Fit for, adapted to, or reflecting the taste of the people at large: popular entertainment; popular science.
5. Accepted by or prevalent among the people in general: a popular misunderstanding of the issue.
6. Suited to or within the means of ordinary people: popular prices.
7. Originating among the people: popular legend
Popular doesn't mean EVERY FREAKING PEOPLE ON THE FREAKING WORLD LIKES IT.
If thousands of people love it, it's popular. Not mainstream mind you, but it's widely accepted among a group. Majority or not.
Internet memes are popular, but they're also esoteric to non-seasoned users.
Mother is popular in Japan and among certain gamers and most Game Journalists.
Pokemon is popular, but not well accepted among the older crowd nor would the older fans would be taken seriously by their non-fan peers.
Popular
knowledge exists in certain celebrities, whether or not they're fans of said celebs. That being said, the existence of manga is acknowledged by outsiders even if slightly. Even comic book artists start to borrow from this style like Adam Warren. Anyone who buys PSM will see his work and that's a popular magazine to PlayStation owners.
Some of the best selling Japanese videogames have designs much like manga or anime. If best selling means it's popular just like how a best selling CD is popular even if it hits only a million people, IT'S POPULAR.
So don't go around saying "Oh, Crayon Shin-chan isn't 50 Cent, therefore it's not popular". On your basis I could say "50 Cent isn't popular outside of hip-hop fans, so it's not popular as you'd think." or "Boondock Saints isn't known outside it's fans, therefore it's not a popular movie."
More than one person IN YOUR GENERATION will know about it. Even if it makes up a small number of the population from where you stand, it's still popular.
Get over it.