I'm not sure "a plain ol' Django monolith" with none of the "fancy stuff" is either what people are referring to when they say "kubernetes", or a great choice for that. I could run hello world on a Cray but that doesn't mean I can say I do supercomputing. Our team does use it for all the fancy stuff, and spends all day everyday for years now yamling, terraforming, salting, etc so theoretically our setup is "entire application stack as YAML files, fully reproducible", but if it fell apart tomorrow, I'd run for the hills. Basically, I think you're selling it from a position which doesn't use it to any degree which gives sufficient experience required to give in-depth assessment of it. You're selling me a Cray based on your helloworld.