On the subject of “reporting culture” one glance at that paragon of virtue “Mumsnet” will show that many curtain twitchers first question is “who should I report this too”...such is the world we live on.... so the idea that a commander can self regulate on this and get away with ad hoc passengers visits at his or her discretion is naive..
I believe that was left to individual nations to regulate as they saw fit. Consequently, and I know this for a fact, there are still plenty of airlines which do allow FD visits subject to certain criteria being met.
Which sums it up and is probably all that needs said on the subject...