Considering this entire exercise is only going to work with package variables, and we have to disable strict 'refs' for it to work in the first place, I don't really get your remark about
use strict;.
Package variables are Perl4 left overs. The era predating strict. And lexicals. When Perl variables were much more like AWK or Shell.
And do get your capitalization right when it matters. perl cares, because perl is the implementation. But in the language, Perl, you can use any package variable you want, at any time*, without making any declaration you intent to use the variable.
*You may, however, be forced to use the fully qualified name.
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