if you install kubectl plugin for oh-my-zsh you don't need kubectx and/or kubens .
1. it has build-in "kcuc" (kubectl config use-context) to switch to other cluster
2. it has build-in "kcn" for "kubectl config set-context --current --namespace"

They serve different purposes. Kubens and kubectx are way better and can do, i.e. a live search among your ns/contexts, selection by operating the arrows, and not typing the whole names. Also highlight the currently chosen context. So I don't see any reason why would you want skipping installing them and using just aliases, which is definitely more difficult in my opinion.

The report's most important part is the last character on the line like the green check mark. Unfortunately, on Linux it is a garbled character. Is there any suggested font that could display it properly or is there a setting to change the displayed character? The explosion icon is wrong as well.