I agree. It's crazy.
And I don't want to advertently minimise any risk.
But, any transactivist can buy a ticket and go to the actual meeting.
There is no publicity to be had in intimidating women who are in a pub beforehand.
And they don't have to follow women to find out the venue. They just have to buy a ticket, like everyone else.
I suspect their main job will be to get the venue to pull out.