You’re being dogmatic about your, what seems to me, objections to LLM skills.

Making data ingestible is just laborious and unappetising to an engineer. So hand it over to a data entry operator who’ll do this happily for a wage.

I’m not sure why the issue of making data available to an LLM is a failure of the LLM.

Btw, OpenAI’s LLM can very well parse images, read handwriting, fix sloppy spellings, and extract objects from unstructured data.