[CentOS] contradictory netfilter default policy

I'm curious why CentOS contradicts its own (or, actually RH's) netfilter
default policy.

On http://wiki.centos.org/HowTos/Network/IPTables , at the end of
section 1, it's stated that (generally) the default policy for INPUT is
to DROP. So, why is it set to ACCEPT?

Btw, Fedora is also this way.