Very poor countries are currently foregoing tourism rather than risk importing new infections. I hate that so many wonderful guides and establishments are suffering right now, but it's both a reasonable and horrible tradeoff that reflects the reality of the situation. If we want these countries to be helped, it won't be by bringing in Covid-19+ tourists. Maybe the innovation is in having travelers take insurance to have bio-containment flights out if found to be positive (just throwing a possible idea out there).
I personally want to get back to Chiapas, Mexico and Guatemala and Nicaragua whenever it is reasonable to do so. But definitely not while infected.