Why do work that you don't need to? It takes me about 12 and a half seconds to type: use CGI; ...
Sure. After you've used CGI a few times it only takes a few seconds. But I'll wager the first time took a lot longer. It took me hours, because I wanted to understand what was going on under the covers. Ditto for the XML:: stuff. The first time can be a killer. If the only advice we give people is to use CGI, XML::*, etc., then we might be short-changing them. It might be the "right" way, but is it the only way? Heck no. Applying a regex to $ENV{'QUERY_STRING'} works just fine for some one-off problems. Do I do that anymore? No. But in some cases, it's O.K. to send people away with that as an option.