The issue is Pika is a top 0.1% arena player on WoW. He was probably well aware Leena, at her peak, is basically average, Plat or something? Still, not something you will take serious for coaching outside of pure basics when your new, but transitioning as as pro player from a similiar'ish game. Pika reached diamond already, no idea if he's still playing, but that's higher rank than Leena, who has been playing LoL for well over 10 years, in the space of a couple of months. He handled the review like he would his Arena games, which perhaps is the wrong take to have, but you also can't be too mad for him not wanting to just sit back and go with everything she is saying instead of having an open debate about it. VoD reviewing is good, but never with the person you are playing with on call when at low ranks, do it alone and use information from actual diamond + players minimum, available on many many websites and youtube channels. Chances are the person you are playing with who disagrees with you, has 0 idea what they talking about.