Hearhere - exactly, it is a problem, isn't it. The only technical issue is that it didn't specify only sexual assault on women, I'm sure men could have left too, if they had been victims (but we all know it's much lower rates). I was younger, and less feminist, when it happened, but I wish I'd paid attention to whether men could leave if they had ever been accused, even planting the idea of false accusations to people wanting out of jury duty would be bad. However, we didn't get out of it altogether, we had to come back for a different trial within three months.
I was surprised when I discussed this with people that the men instantly saw a loophole for women to take, whereas women felt it was stressful to decide the right thing to do depending on their own experiences. For women it was - "does being groped count," "am I biased because of this teenage thing that went further than I wanted it to..." it just flagged up how different our experiences are.