Yet another option for more technical users would be to do it with a dedicated sync program on their computer. For example, I automatically sync my Nostr events to my laptop in a background job once an hour. Would be rather easy to just post them to RS from there, too.

That said, I still like the original idea of it being as easy as flipping a switch in the account settings, so that I as a user don't have to worry about any of it.