Why the helm chart does not support LoadBalancer?

What happened and what you expected to happen:

I'm using argocd and helm to deploy the cloudcore.

I found

One more important thing about cloudcore container mode is about how to expose cloudcore port to edge nodes. In container mode, we will also create a cloudcore service. And it's your duty to choose a LoadBalancer or adjust it to NodePort ServiceType, to expose cloudcore service to edge nodes.

In the documents.

And I have read the helm chart template. Why the helm chat only support ClusterIP and NodePort and not support the LoadBalancer ? Are there some reasons behind this behavior?