I could see some arguing that vanilla/strawberry are not binary distributions of perl

I personally believe that adamk should have the last word on it and at indeed Strawberry's own description at CPAN says:

Strawberry Perl is a binary distribution of Perl for the Windows operating system. It includes a bundled compiler and pre-installed modules that offer the ability to install XS CPAN modules directly from CPAN.

(with additional emphasis added by me.)