Perl 5 is still what a large portion on what the community uses, so it's not out of date. Then again, very little of the text refers to anything technical. It's a discussion of the cultural differences between Perl and other communities.

"Perl 5 is still what a large portion on what the community uses, so it's not out of date"

Just FYI, Perl 5 have changed a lot the last 10 years..

... but is still very, very backwards compatible.

(Just to be complete.)