I’m not sure what this is supposed to prove. Materials that create a particular effect can be used to create a particular effect. Pencils are pencils. Although the paper has lines in it that undermine the work. But once you start getting into colors, you raise issues of pigment quality and lightfastness, durability, etc. Cheap paints can look flat and quickly fade or flake, etc. Paper that’s too acidic will yellow - looks great now maybe, but…
A number of artists in the '60s and '70s started using unconventional household materials to make art - only to have the work start literally disintegrating in a couple decades. So yeah, if you don’t mind your art being disposable, you can absolutely use whatever you want without consideration.
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