At least when everything works well.
On all JP-01s in my household, when mobile data "went bad" (which is why I wrote the "nofono" restarter) ofono restart required re-entering the PIN. But a reboot will always restart ofono. Well, it's a reboot.

So my guess (as someone without a clue how this stuff actually works) is that at least part of this problem could be somewhere deep in the closed modem firmware which does not necessarily reboot with the "visible" OS.