Fedora retirement guidelines

Right now the retirement guidelines state that you should only retire in branched (prior to freeze) and up to master... But I just had a user bitten by a change in behaviour between dnf and yum that was discovered here: https://bugzilla.redhat.com/show_bug.cgi?id=1096506 This is the bug raised with my package: https://bugzilla.redhat.com/show_bug.cgi?id=1342249 It seems very unintuitive to the user, and wasn't initially apparent to me until I look at all open dnf bugs and did a "find on page" for "obsolete" For now I've opened a rel-eng ticket to get the letsencrypt packages properly removed from the F23 repos so that a dnf install letsencrypt, like F24 behaviour, will install certbot. I guess the real question is - is the dnf behaviour correct, and if the dnf behaviour isn't going to change should we allow packagers to retire from a released branch?