There was some discussion on pet faction on P99 here:
https://www.project1999.com/forums/s...ead.php?t=1637
Apparently the AFK leveling was happening, I never found the dev comment with pets being changed to indifferent, but I suspect it was a matter of AFK leveling being a bad exploit and not enough CSR to police it.
Having pet poof after 2 mins will still help prevent any kind of AFK exping while FD. I imagine even with an indifferent pet, you can do some kind of guard command to get agro still or macroquest /pet attack target.