When I last checked and started the Syncthing setup wizard, I got the impression that to set up the synchronisation between devices A and B; I would have to paste the public key of B in A and the public key of A in B, which is more complex than initialising this step with a token key as Resilio sync does it.

Furthermore, it prevents its use as a public bulletin board where the server can share a read key and allow anyone to keep a copy of the data. I am developing an E2E evoting app where that would have been useful.