For me there is a huge difference between Celtic Park and Mosset park here in moray. Fir park and most grounds we play at prob fall into the grey area. With infection where they are in the highlands no reason not to have fans in highland and lower league grounds could limit them like down in England to stop large numbers going. You could also have some fans at lowland league grounds in certain areas (would need to know more about local situation in all localities than I do).
we have treated everywhere with the same broad brush and the talk of fans especially in the old firm or no where seems very strange. All the highland league games I have been to was social distancing before I knew it was a thing add in face masks and some protection for the elderly like early entry and late exit would be completely doable IMO.