I used to make this type of argument myself. However I’ve been on the wrong end of a woman lying and using the legal system to effectively destroy me. Yes some men get away with rape and yes many women ruin men with false allegations. For the attention, the big money pay off, the sympathy, revenge, the sense of power in destroying a man etc etc.
Also the reason a woman’s behaviour prior to and after an alleged rape is examined is because it gives an idea of her intent.
The eternal problem with rape is it usually relies on ‘he said, she said’ evidence alone.