Hi, i'm partly responsible for rjbs introducing this discouragement in commit 10a4597703f4b044d3f968bf3923644ea2387f5c. I've extracted some of the chat log that led to it.

https://gist.github.com/wchristian/97525932a89d0785e07371c60d84209c

And here's the p5p mailing list thread that followed afterwards:

https://www.nntp.perl.org/group/perl.perl5.porters/2014/03/msg213382.html

It's a lot of material, but i hope it'll help.