Tweaks to README install docs
Use improved subctl wording derived from code review on similar docs on
the website. Adjust install subheadings for consistency, clarity that
all methods use the Operator.
@@ -57,10 +57,10 @@ See the [Prerequisites docs on Submariner's website](https://submariner.io/getti
## Installation
Submariner is deployed and manged by its Operator. The Operator can be deployed directly, or by using Submariner's Helm Charts, or by using
-Submariner's `subctl` CLI helper utility. `subctl` is the recommended deployment method because in addition to easy deployment it also
-provides testing, debugging, and bug-reporting capabilities.
+Submariner's `subctl` CLI helper utility. `subctl` is the recommended deployment method because it has the most refined deployment user
+experience and additionally provides testing and bug-diagnosing capabilities.
-### Installation using Operator via subctl
+### Installation using subctl
Submariner provides the `subctl` CLI utility to simplify the deployment and maintenance of Submariner across your clusters.
