I think its bc historically it doesnt seem right. Most of her most powerful and impressive feats are with TK, not TP. TK is the power she's had the longest and has had the most experience with. Flying through hyperspace, rearranging molecules, performing surgery in Storm's brain to remove a nannite, etc....thats all TK. Meanwhile with her TP, they always find away to make her ineffective by making her threats TP resistant. If Hickman is going to redefine her power classification then he better showcase why she is an omega level telepath. Her TP not working on people isnt going to fly any more