To be clear, I'm not claiming you can't do these things on native AWS, but rather there are wide choice of high-quality projects ready to go that target k8s.
- Countless Helm charts
- Development tools like Telepresence
- Many GUIs / terminal UIs
- CI/CD tools like Argo
- Logging and monitoring tools
- Chaos engineering tools
- Security and compliance tools
- Service meshes / request tracing
- Operators for self-healing services
- Resource provisioning
- etc...