Colour integrity means nothing because it wasn't mentioned on the photography course you attended or in the few paragraphs you've read on the subject?
INTEG'RITY, n. The entire, unimpaired state of any thing, particularly of the mind; moral soundness or purity; incorruptness; uprightness; honesty.
It means nothing because we're not having a moral argument here. There is no moral basis for there to be "color integrity". That was the second definition. The first is wholeness; entireness; unbroken state. There is nothing broken, incomplete, or missing from the photos or the camera. Therefore it still means nothing.
"Few paragraphs"? I've read many many paragraphs in many many papers on photographic theory, why the eye works as it does, and why complaining about how a camera renders an image is a moot argument because your eye operates differently from everyone else's. If you're looking to faithfully reproduce a scene with a camera, you should always expect to post process, even if it's not for an artistic purpose. Absolutely no camera ever created perfectly reproduces what you see, because it's not using your eye to capture the image.
Utter rubbish. Photographers use a tool called a camera to capture images, not create them.
And sculptors use a hammer and chisel to capture an image. And painters use a brush and paint to capture an image. If you all three use your tools to capture an image and you call the painting and sculpture art, then the photo is art as well.
'ART, n. A system of rules, serving to facilitate the performance of certain actions; opposed to science, or to speculative principles; as the art of building or engraving. Arts are divided into useful or mechanic, and liberal or polite. The mechanic arts are those in which the hands and body are more concerned then the mind; as in making clothes and utensils. These art are called trades. The liberal or polite arts are those in which the mind or imagination is chiefly concerned; as poetry, music, and painting.
Skill, dexterity, or the power of performing certain actions, acquired by experience, study, or observation; as, a man has the art of managing his business to advantage.
So, yes, according to the definitions, photography is an art, rendering the photographer an artist, regardless of your opinion. Which is confusing because you complain about the color which is only an argument an artist would be concerned with. The majority of people snapping selfies aren't concerned about the color. So you defeat yourself with your own argument.