why is he so rude towards PRXjeez
You are saying this while watching an NA player stream? He's not a caster, it is a fan stream. It's more meant to be a SEN watch party.
If I had to take a guess, he is saying "It's whatever" implying SEN needs to shake their loss off and keep their head in the game.
If you do wanna complain about someone being biased, complain about Pansy.