Most of us have never said it would die immediately. Highland plants may look like they're doing pretty okay for a couple of months, then slow down and languish for a great period of time before actually dying in improper conditions. But, improper conditions such as never dropping below the upper 60's is going to eventually be a downfall for a strict highland plant (despite the fact that, yes, it has been reported a being a fairly tolerant and easy highlander once settled, as opposed to most very rare highlanders). Other Nepenthes such as many hybrids may do very well in a tank with the boa (which is a great looking animal by the way
), or intermediate species, but I wouldn't dream of trying to acclimate a plant that eventually NEEDS long periods of at least into the very low 60's or upper 50's into a reptile tank. The period you have had either plant, a space of a few months, is nowhere near enough to show the eventual damage improper conditions can cause. People with low temperature extremes, or humidity fluctuations are a different story in the test of plant acclimation because the fundamental conditions are still met somewhere (thinking here of one member's famous dry-air patio where she grows extreme highlanders), but an improper constant isn't the same.