Those two are just design principles and I completely agree that they are great together. However, those two don't form a genre. The classic roguelikes e.g. rogue, nethack, brogue, dcss, doomrl etc. very clearly are a genre. They're very similar yet all do their own thing and do interesting things in the confines of the genre. Modern roguelikes aren't a genre because there's so many variations that it's meaningless. Risk of Rain 2, Dead Cells, Hand of Fate, Binding of Isaac, Ziggurat. They're all roguelikes apparently. But they all play so differently. What's the point? It's like saying Contra, Super Mario Bros, Battletoads are all in the same genre because if you die a couple times you have to start from the beginning.