It is indeed unfortunate, but there is still the alternative to either

• link directly to a pragma https://perldoc.perl.org/open.html
• or to choose the cpan version via [mod://] open

my personal preference would be to allow any URI being pasted directly and being auto-transformed into internal markup.

I suppose you are one of the maintainers of perldoc.pl, please consider signing in into perlmonks or at least signing the posts to facilitate longer discussions.