At any rate, the issue wasn't possessions/artifacts being played on followers, it was conditions, which have considerable flexibility already in this game. We have conditions that add vitality, conditions that add to (or take away from) the archery total, conditions that change how the ring-bearer gets corrupted, heck, conditions that act as minions (
here and
here). It seems to me much less radical for a condition to say "bearer must be a follower" than "make this condition a fierce strength 10 minion". I think the rule of "followers may not bear cards" is just fine, since that will block possessions and artifacts, but the ever-fickle condition will simply scoot by it when it needs to.
Where does the authority lie? I say the most recent, be it a rule or a card. If a card were to be printed
today that said "exert five companion, add three threats, three burdens and discard three cards at random from hand to cancel the Ring-bearer's skirmish" I would roll with it...simply because, by design, knowing that canceling the ring-bearer's skirmish is illegal, it added such a heavy cost to match its effect. It would take into account that that would be very hard to do on site nine (assuming the shadow player has been awake all game). At any rate, I like less to look at O Elbereth as a
ruling, and more an
errata. Cards that change sites were errata'd to say that they only work in Fellowship block, or Tower block, or the block they belong to...how is this any different from a "ruling"?