Even with CGI module, I doubt there are too many users of that module, if there is any, actually have no idea of, for example the basic html tags. It is hard for me to believe that there are people who are capable of coding in Perl and yet has absolutely no interest in knowing those tags.
Also there is a subtle difference between Class::DBI and CGI:
For CGI, all what you care is that it delivers the visual effect you want, simple and straight. Class::DBI is certainly a good tool to generate SQL statements for you, but the SQL statement it generated is not always optimized.
For some database implementations, they join tables in the sequence you stated in your SQL statement, without optimization or thinking. In some cases, the sequence of tale joins is the key to your query performance (you want the join happens in such a sequence that allows you to quickly narrow down the result set). With Class::DBI, you lost this kind of control.
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