First I thought you were writing incoherently, but now I understand your point.

I agree with what you said, that our "art" is most likely just something akin to bird song. Maybe even less or something else entirely.

My point of view: Birds also have a "rebellious phase" where their songs differ from the songs of the general population. They are experimenting with new and unorthodox songs. These go away after they come of age and have to find a mate. My hypothesis (well, I'm no bird) is that there is a lot of emotional impact in these bird songs, whereas in some songs humans produce, much which previously required emotional awareness or emotional connection is now being replaced by templates, methods and formulas to make music. It's some sort of depersonalization or objectification of the process of making music. This is probably what you meant by "it isn't art anymore".

Did I get right, what you were trying to convey?