![](https://lemmy.ml/pictrs/image/e550bc4a-4cad-442b-a375-b82c4b28e476.png)
![](https://lemmy.ml/pictrs/image/2QNz7bkA1V.png)
They’ll brick your device if a part can’t be verified so that isn’t much different they destroying. Maybe they don’t require repair shops to hand over personal info, but they do require device identifiers so I wouldn’t be surprised if that is basically identical.
It is also worth noting that Firefox Sync is end-to-end encrypted. So the amount of data the server gets is quite minimal. (This is unlike the sync of a lot of other major browsers.) So unless you want to hide your IP and activity times from the host self-hosting isn’t critical.