You've moved your argument from "synchronization always must have a source and destination" to "certain synchronization models are not well suited to some use cases".
I certainly agree with the latter, even if it has no bearing on the former.
> You've moved your argument from "synchronization always must have a source and destination" to "certain synchronization models are not well suited to some use cases".
No, I have moved from specific examples to general examples, and general rules. The most general rule is that synchronization cannot be automatic and have a desirable outcome.
I certainly agree with the latter, even if it has no bearing on the former.