[mistercheph]

I don't think you've thought seriously about what writing "is useful for" or why someone might start to write, and you can't just pick a rationale and impose it ad-hoc on the past and wave a flag saying humans are unchanged. Sure, in some ways,, relevance?

We haven't ever observed the invention of a writing system in the absence of cultural contact with written language, so we actually have no basis in evidence for the motivations that bring such a thing about, we just have speculations based on preconceived notions about why people might use writing, which is fine, but don't pretend like it isn't blindly opining on why you think someone would've invented or used a writing system