About that uturuncu volcano it is really bad place. It grows really fast. I think only anak krakatau grow more faster or about same speed. Magma there is really dangerous also in uturuncu and there have been lots of activity also in Altiplano-Puna volcanic complex and absolutely some of those volcanoes can make supereruption.

In about that speed it will erupt before it collects enough magma about vei 8 eruption. Magma rise so fast that i dont think that landscape can hold it enough long.