Is the KJVO heretical?

Hi, there was a post in another forum that read:

"I fail to see how the position of KJVO is heretical as opposed to erroneous or ridiculous. I'd call them funny people, or a misled bunch, but I wouldn't exactly call them heretical."

I thought it would be nice to see what you all thought. Is the KJVO right? Are they "funny people"? Misled? or are they heretical?

I'm not talking KJVp, But true onlies.

The definition of Heresy is:
heresy:

n 1: any opinions or doctrines at variance with the official or orthodox position [syn: unorthodoxy, heterodoxy] [ant: orthodoxy] 2: a belief that rejects the orthodox tenets of a religion [syn: unorthodoxy]

I believe the belief is heresy since Christianity has existed around 2000 yrs and the KJVO movement has only been in existance around 50 years.

For 1950 years this belief never existed in Christendom, but now it does. And it only exists in very few numbers when compared to all of Christianity.

Even if someone could prove that there was a KJVO in 1612, that would mean that the majority of Christianity didn't hold to this belief. (33 AD-1611 AD)

So do we have a right to call it heresy?
It is a doctrine not built upon any Scripture, but declared to be Christian.

If so what about
(Tit 3:10) A man that is an heretick after the first and second admonition reject;
Notice the word heretick, it means schismatic.
do you know of any other doctrine that is dividing the Body of Christ as much as KJVOism?

I believe it is rightfully called a heresy. And we true bible believers should fight it tooth and nail.