I don't feel like the (valid) point you are making applies to this case. The 12 Factor App describe reasoning and motivations behind many common architectures

I don't feel like the (valid) point you are making applies to this case. The 12 Factor App describe reasoning and motivations behind many common architectures today (speaking as someone that doesn't work with k8s) and for anyone that was not around in 2011-2015, it could be an interesting read