I stick with Resilio for this reason. For over a decade now it had been a 100% reliable fire and forget tool.
You don't have to do that with Syncthing. See https://docs.syncthing.net/users/introducer.html
> The introducer feature lets a device automatically add new devices. When two devices connect they exchange a list of mutually shared folders and the devices connected to those shares. In the following example:
> Local device L sets remote device R as an introducer. They share the folder “Pictures.” Device R is also sharing the folder with A and B, but L only shares with R.
> Once L and R connect, L will add A and B automatically, as if R “introduced” A and B to L.
> Remote device R also shares “Videos” with device C, but not with our local L. Device C will not be added to L as it is not connected to any folders that L and R share.
So then I could make all my devices introducers, which is really the same amount of work, plus adviced against because then no device can ever leave your network (remove it from one then all others will re-introduce).
Dealing with devices is really not what I want. I understand that Resilio is a bit too basic on security, because the share key is the deencryption key (in most cases), but Syncthing isnt quite it either. I think it's suited for few devices and a knowledgeable person, but not my use cases.