Personally I don't like to gatekeep art.

For example: If someone walks out into the wilderness and encounters a particularly fascinating rock formation or plant, something that was created completely by accident and without a artist or designer, but they find that the sight instills in them strong emotions or deeper thought, I believe they should be allowed to call that art.

Maybe this is just petty linguistics and semantics though, in which case we're drifting away from the topic at hand, and I'm sorry.

If someone walks out into the wilderness there's nobody to disallow anyone to call something art anyway. It's a free person. Hope you turned off networking then. :-) But as a society we committed on specific words to have a specific meaning and the process of _creating_ art clearly involves humans as creators.