A reason was given over a year ago, in <https://bugs.launchpad.net/ubuntu/+source/pam/+bug/253103/comments/3>. You are proposing a behavior change that you should bring up for general discussion with the developers in an appropriate forum, such as ubuntu-devel; and the implementation should not happen in the pam package. Closing again as invalid.
A reason was given over a year ago, in <https:/ /bugs.launchpad .net/ubuntu/ +source/ pam/+bug/ 253103/ comments/ 3>. You are proposing a behavior change that you should bring up for general discussion with the developers in an appropriate forum, such as ubuntu-devel; and the implementation should not happen in the pam package. Closing again as invalid.