Documentation in CL is pretty bad. Worst is when people say its well documented and its nothing but, all those manuals just listing all the functions are a complete nightmare and useless to me
And you're right - trivial docstrings for all the functions isn't documentation at all. Real documentation is the four-part system[1] of tutorials, howtos, examples, and reference material - I've found this mental framework to be enormously helpful for both (a) identifying when some other documentation is inadequate and (b) improving my own.
If you are interested, please read it's docs and join the effort of making good documentation for CL projects: https://40ants.com/doc/