This looks like the standard set complaints made by most scripting language upstreams at most distributions, with the added complication that because so many distributions have essential core functionality that needs Perl, they want a minimal subset that supports that core functionality without including the entire distribution. Debian ships a "perl-base" which includes just enough Perl to run dpkg and other core utilities. (One of these days that might change, with more and more of those utilities rewritten in C, but it won't change anytime soon.)

While this post starts out with the classic "compile/install your own Perl" line that most other scripting language upstreams spout, it later reverts to the sensible position that distributions just need to provide some package which pulls in the full Perl distribution. That seems much more reasonable, and in fact most distributions do this. Debian provides the "perl" package for a full Perl distribution, and the "perl-base" package for the small subset that the core system needs.