This article is from 2002, a lot can change in 9 years. The module was renamed from Curl::easy to WWW::Curl::easy in 2003, prior to it being uploaded to CPAN. Then another change to WWW::Curl::Easy in 2005, WWW::Curl::easy was removed in 2008. As has already been pointed out, WWW::Curl states:

"This module provides a Perl interface to libcurl. It is not intended to be a standalone module and because of this, the main libcurl documentation should be consulted for API details at http://curl.haxx.se. The documentation you're reading right now only contains the Perl specific details, some sample code and the differences between the C API and the Perl one."

It may be worth actually reading and understanding a modules documentation before writing it off as "awful".