This surprised me too, but it is apparently an explicit choice made by upstream.
gpg-wks-client(1) man page: > gpg-wks-client is not commonly invoked directly and thus it is not > installed in the bin directory. debian/gpg-wks-client.lintian-overrides: > # these binaries are stored in /usr/lib/gnupg, as recommended by upstream: > gpg-wks-client: manpage-without-executable > usr/share/man/man1/gpg-wks-client.1.gz