They'd certainly disagree with the person who said that, but it doesn't seem to be me. Sorry for the snark, but you're putting words into my mouth: I said that scarcity has value, hence the popularity of 'limited runs' of prints and albums. No judgment about what is or isn't art included.
>Treating these like talking greeting cards is like treating art as paper and ink.
Which is pretty clearly implying talking greeting cards are not art. And since I doubt you're claiming novelty == art, and the only other thing you mentioned was scarcity...
A weak connection on closer examination, I'll admit.