Well, it is not a crusade but it's usage it is now discouraged: 20 years full of events are passed and CGI is no more the king of the dyanmic web.

CGI was a specification and CGI.pm was it's implementation: the new shiny specification is now PSGI and Plack is the implementation by it's author.

That said you can install CGI and you can use it if you understand well your needs and eventual drawbacks.

You can be interested in the following video by SayerX (one of the author of Dancer2) CGI must die!

See also perl as a php alternative 2015 and also CGI alternatives BIS lot of links and finally the recent UP-TO-DATE Comparison of CGI Alternatives - a 2017 Perl Web Panorama

My homoenode if full of links about such alternatives; you are welcome at any time!

L*