It is more like make the CLAUDE.MD file as small as possible. What is the least amount of info it needs to be more efficient for the repo. I think the best thing is to point out where important things are so Claude is not just reading random files.
I find this to work for a V1 or product with only a few users but not sure this will scale. At least you still need software engineers reviewing the functionality and giving the AI hints at what to do.
A lot of people should try being more specific in their prompts, but then again at a certain point you're basically just writing all the code in sentence form!