> From: Jimmy Yuen Ho Wong <wyuenho@gmail.com>
> Date: Fri, 05 May 2023 16:07:20 +0100
>
>
> Reproduction:
>
> 1. `(custom-set-variables '(byte-compile-warnings '(not docstrings
> docstrings-non-ascii-quotes)))`
> 2. M-x package-install RET move-dup
> 3. M-x package-install RET monky
> 4. Observe in the *Compile-Log* buffer the `custom-declare-variable
> ... docstring has wrong usage of unescaped single quotes (use \= or different quoting)` and `docstring wider than ... characters` mesages
>
> Expectation:
>
> Blacklisting docstrings and docstrings-non-ascii-quotes should not result
> in any docstring warnings being emitted during byte compilation.

I don't see any warnings when compiling the latest version of
move-dup.

As for monkey: it explicitly sets the value of byte-compile-warnings
in file-local variables:

  ;; Local Variables:
  ;; byte-compile-warnings: (not cl-functions)
  ;; End:

So this overrides your customization when byte-compiling this file.

I see no bug here.