Yes, it's serious for _most devs_ who have code that could run on k8s: back-end devs. And _most_ devs who touch anything in FE, mobile apps, IoT, DBAs also have to touch the corresponding back-end and its associated platform tooling where k8s is a bliss compared to all the team-specific stuff we encounter in the back-end. Now I agree that k8s is a nightmare for the infra people who run it, but honestly it is insanely comfy for the (back-end) devs who need to use it.