Uninstalling helm chart leaves resources that were created by gateway

*Description*:

I'm trying to understand if this is how the helm chart for gateway should behave? I would have expected it to clean up after itself?
I was left with svcs and deployments for the gateways itself after uninstalling gateway itself via helm?

*Relevant Links*:
https://github.com/samip5/k8s-cluster/tree/f25d722257affcb322204cfbc363ba269c677946/k8s/nebula/apps/networking/envoy/app