Exactly! In fact, "write policy" was renamed to "event-sifters" without being noticed by anyone. 

 FYI: https://github.com/hoytech/strfry/blob/master/docs/plugins.md 

 Thank you. Yes, i just realized it now 😅

It changes with this commit

https://github.com/hoytech/strfry/commit/7da862eb913b3cffffbd003ba8c408999b4dcbf5