This is completely true, and it's a really common objection.

I don't imagine people will want to fully visualize codebases in a giant unified diagram, but I find it hard to imagine that we won't have digests and overviews that at least stray from plaintext in some way.

I think there are a lot of unexplored ways of using AI to create an intelligent overview of a repo and its data structures, or a React project and its components and state, etc.