So now youre moving the goal post to ''it being a fight'' for it to not count as an aura loss to get punked. Lmfao. You know what your issue is? You look at things from a simplistic pov. I mean Imu being shocked at a centuries old foe randomly being felt 800 years later is fine. It was showing genuine shock, and its normal. JB was his arche enemy.
Once again very simplistic, brook saving his friend with his soul powers is very much on brand with Oda and actually a cool way to keep Brook relevant, as he can do the same to others who get controlled by Imu.
Its a cool way to keep lesser SHs relevant which is something people have been worried about for the endgame.