Yeah, I think it will come down to the interpretation of whoever has oversight on said airline asking for remote approval. One could argue that a pandemic, and the Government "guidance" to socially distance, warrants the use of remote dispatch because having people together in the dispatch center is dangerous and thus "not operable". Especially if local or federal Governments are shutting down businesses for health and safety. One could disagree with all that, too. That's pretty much how it played out during the pandemic, some agreed, some disagreed.
I think the time limit is fluff if I am being honest. At one point I remember it being "we can only do this for a couple of weeks" but "a couple of weeks" always got renewed to a couple more weeks. If they can just renew the emergency authority, I don't think it means much more than periodic reevaluation of the ongoing situation.