Not so. As these are isolated occurring form constants popping up outside of any possible diffusion, their universality prior to symbolic or pictographic coherences indicate an interim state between expression and symbol.

The rush to claim these are a language is unsupported and is quite suspicious of a retrofitting that's prone to pseudoscience.

I would read Paleoperformance and Paleopoetics for discussions about pre-literate, pre-symbolic cultures from the archeological evidence.

Imposing intent or causality onto these is a bit bizarre.