Similarly to how literal literacy enables access to information, Computer Programming literacy could enable people to derive more value from open software, for example. It could enable people to automate some tasks, or make some tasks easier (eg. gathering + summarizing information, which can enable someone to make better predictions/decisions).
If I want to know what happened today, I can read the newspaper. If I want to know what happened on Nov 25, every year, I could write a quick script fetching this information from some source and look at that list showing Nov 25 (although yes, Wikipedia provides some of that info).
Computer Literacy provides tools to interact with information.
If this was 1990 I would agree with you.
Its not 1990, and computers do a lot more than edit documents, watch netflix and browse the web, if thats where someones knowledge of computing ends they dont have an understanding of the basics and are by definition computer illiterate, modern day equivalent of signing their name with a palm print.
How much do you need to know about how your car works to benefit from driving it?