It’s unrealistic to expect the entire team to know how to build and safely operate IPv6 BGP anycast with an HTTP/2 tls load balancer, authentication and authorization, integrated with a modern observability platform and a zero downtime deployment CI process.

It is realistic to expect a small team to build the same in an industry standard way and hand of a clear, well documented API to the rest of the team.

Bespoke solutions need to deal with this complexity somehow, k8s provides a standard way to do so.