I'm inclined to agree with this. And normally I don't agree with compromise for the sake of expediency. Particularly in this issue.
But I'm trying to find holes in it and I can't. 'We have to ring fence all single sexes because of predators', does side step who they are, in favour of why they are being allowed in.
On the other hand, it wouldn't address things like all women shortlists, or awards meant for women going to men.
Maybe she will be using different reasons, for different types of exclusion.
I do believe that the big one for transactactivists is bathrooms. Most of them won't be going to prison, or playing top-notch sport, but the bathroom validation is, or could be, a daily occurrence.
So maybe she's reserving 'there are more predators than trans people' for the bathroom issue, and will have a different premise for the other spaces.
There clearly are more predators than trans people, I don't know how Kate Osborne doesn't see that. Saying toilets are mixed sex will allow not just any predator in, but all of them.