You're missing the point of Kubernetes. Kubernetes is so organizations can have a standard way to deploy infrastructure that makes talent and knowledge portable between organizations. Everyone building their infrastructure from a kluge of their own scripts is not the way forward for the industry imo.

You're fair to argue then we should have a less complicated tool that's being standardized on but Kubernetes is where the industry is congregating now and that less complicated tool, that satisfies the most use cases and a high level of standardization, has yet to emerge, there have been multiple that have tried but never gained traction or outright proved to actually be more complex to manage once you go beyond small businesses.

Personally as a maturing profession we should stop reinventing the wheel for much of our tooling, adopt common tooling across as much of the industry as we can and then draft and produce standards engineers can work by so we stop having so much slop across the industry.