Two great talks when it comes to the questionable greatness of Perl:
https://media.ccc.de/v/31c3_-_6243_-_en_-_saal_1_-_201412292...
https://media.ccc.de/v/31c3_-_6243_-_en_-_saal_1_-_201412292...
See http://blogs.perl.org/users/joel_berger/2015/12/response-to-... for one response and some discussion in the comments.