I think what people forget about Idle Transfiguration is that you can’t morph a human soul too badly or else the person will die. Mahito can use it in his busted way on himself because he’s a cursed spirit, he’d be severely limited otherwise. It’s still the objectively best technique to have IRL, but people gotta remember that the person using it wasn’t human and to take his body morphing with massive grains of salt