Raybane But now we are talking about lies. If we assume neither side lies as that is still possible
No one said reverse charming was impossible -- we're saying it's not an efficient tactic for experience groups. He later backed off the original claim and quantified it to "outdoors", where you have much more room. It can work there, but in a full group, you're killing much too fast to expend one charm's worth of mana per mob. That's the entire reason that pre-nerf, enchanters either perma-petted, or kept the pet for at least a few mobs, to amortize that cost across pulls.
Solo, sure ... duo? OK. But no full group's doing this, especially in a dungeon setting.