Those vtubers will play as long the game is popular or Bandai Amazon pays them, that is why I just support Vtubers that start from zero and play games that they enjoy and are not hungry for hundred of sponsored videos or collaborations that they pretend to care
U are jumping ahead way too much to assume Blue Protocol will do sponsorship streams with them. Then don't watch these streams, there is no need to hate the streamer for it. You do realise people need money to eat right? You can't fault people who takes sponsorship or have ads in their videos. Your lack of empathy is dire.