Regarding the medivac services, during 2020 we had briefly considered using MedJet and Allianz, just to have that preferred MedJet medivac insurance coverage. But during a pandemic there are restrictions on moving between different regions so you were limited to just emergency evac from a remote area without the necessary medical facilities to the nearest location with the necessary facilities.
So the moral of the story - read the policy carefully, and if unsure contact the insurer directly. Too many people ask strangers on public forums what a policy covers.

One other note on Allianz, they do cover COVID-19 sickness (before and during the trip), as well as expenses associated with a positive test. But again, go to their site, that is clearly explained in the header and could have changed since we returned from our trip last week…