Too long, didn't read beyond the first sentence.
I'll just say this: establishing proof isn't just for a court of law. If you're going to accuse a ref of bias, i.e., purposely making calls against a team he doesn't like, then, yes, I'm requiring proof.
Second, have you umpired or refereed games involving men or/and young men in which you must make a call in a split second?
If so, then we'll resume this conversation about bias as I will ask you to explain if any of your calls included bias.
If your answer is "no" you haven't officiated any sports events, then my insight trumps your lack of experience.
I KNOW what I'm talking about based on like EXPERIENCE. You can only guess.