[ 19:49:04 ] <13Y> or the genjutsu is just a gimmick to paralyze you, while the tree drains all your power
[ 19:49:11 ] <10DS> yeah
[ 19:49:23 ] <10DS> imminent kaguya return etc

I don't see how anyone was expecting anything else.

Also sasuke's comment was a bit uncalled for, kakashi was a mad genius before even having the eye.