Who is the most biased MCU fan?

“Bias” suggests that a MCU fan’s enthusiasm is unfounded. The unprecedented critical and box office success of the MCU indicates that their enthusiasm is completely justified.

It’s not like a MCU fan ever claimed that a universally despised and mocked movie like BvS is one of the greatest superhero movies ever made. There is only one superhero fanbase I’m aware of that has biased nutters like that.