This PR correctly addresses an outdated security check that no longer aligns with modern Helm use cases. The reasoning for removal is solid, especially considering that other Kubernetes tools no longer enforce this check. By removing it, Helm avoids generating unnecessary warnings in valid deployment scenarios (e.g., mounted kubeconfig secrets).

Suggested Improvements:
Ensure documentation is updated, informing users that permissions checks are no longer enforced.
If possible, provide a note about alternative ways users can enforce security checks on kubeconfig files outside Helm.

/lgtm

but IANAM

LGTM

There are a couple reasons to remove this check:

1. When Helm is used in a container running in Kubernetes and the kubeconfig is mounted as a file via a secret you cannot control the permissions and these messages show up. This is a common enough occurance.
2. Helm is not the creator or maintainer of this configuration file. The tools that "own" this file are not providing these messages so why should Helm?

Note, this check was added as part of a security review and was debatable at the time.