"I know Wysteria meant to help, but I do think ... it's a well-researched theory, but it's a theory. If people know that and decide it's worth the risk, it's their arm. But that said, I do think she wildly overestimated the risk of people deciding to follow suit. Wysteria already did it, for one thing."

Yes, it had been a while and Wysteria wasn't present in Kirkwall. But even so, anyone interested in the topic wouldn't find it hard to come across the report. And Wysteria had been actively asking people (or at least Cosima) to consider it while she was still in the Gallows. On which note:

"If anyone tries to pressure you, I have no doubt you can handle it. But I'm happy to pull rank if you need me to. It's your arm."