I remember in Spider-verse they made a point of pointing out how more dangerous and deadly the Ultimate U was. A lot more death and destruction. Miles is prolly relieved to be in the 616 where if he dies he might actually get to come back.
Since spidey was already corrupted by negative in that dark reign mini, I thought they made a point that it wouldn't work on him again. He tried to kill Betty Brant even!
Maybe he is faking since negative doesnt know parker and spidey are thr same guy
butters911's comments