You obviously have a problem with non-traditional gender roles. Its ok. You are allowed to prefer a man calling a game. Id prefer 10 people + over her. But to say she is no good....its just a bias or preference by you that a woman not call games. Can you name one you would accept?
Any, other than her, has nothing to do with her being a female. Her voice, as described by others are finger nails on a chalkboard, rule #1 for an announcer: you must have a voice that most of your audience wants to listen to, it is a reason why many people prefer not to listen to Dick Vitale. #2 You must know what is going on in the game and be able to keep up, not mispronounce names, not call for a FG when down by 4 points at the end of a game. She is terrible.
Now, your refusal to accept that she is just bad and not a victim of some anti-female conspiracy is funny. Let me guess who you voted for in the last election.