Meh. For anything that is unclear as to being acceptable or not, I'd say just go for it until a definitive answer is given. Decisions on exploits is not something that takes decision makers a long time to ponder on. They have the freedom to make the call center around a universal acceptance (e.g. yes, win-trading is acceptable but we don't want it to get out of hand... SMDH), claim that it is NOT acceptable (win-trading is against the methods of play we have in mind for PvP and will result in punishment), or just pick and choose based on the situation.

If they intentionally choose to hold off on officially saying something about it, then that's all on them. Players will always seek ways to speed up ways to get things, and if it's not clear as to being punishable, we will always take advantage of that fact. Just the way we are.