Except - as noted in article - none of the people involved are trained investigators, the starting position it to believe accusers (instead of being impartial),

Except - as noted in article - none of the people involved are trained investigators, the starting position it to believe accusers (instead of being impartial), the accused are not allowed legal representation, and they're often under a tribunal-imposed gag order. There is nothing "just" in that situation. The protections afforded to both the accused and the accuser are to provide safeguards for everyone involved.