Those blooms from Dinu are not the "true" Aloe vera... should be yellow.
There are a number of Aloe vera hybrids out there. Interestingly Aloe vera is not capable of growing true from seed (only from offsets) maybe due to thousands of years in cultivation. But it can definitely hybridize with other aloes. Long story short, the orange-flowered versions of the plant are probably hybrids.
The heirloom aspect of these plants which you describe looms large in their survival. Wherever there are aloes, there are people who use them medicinally. One thing I like to point out (especially to people who go harvesting aloe leaves randomly in the public garden here, where there are maybe 30 different kinds) is that there are actually a few poisonous aloes, and while you're not likely to find them in cultivation, it's better to stick to the plants you know.
