That commenter is stating the liberal JW viewpoint. The way that is the official "way" to phrase it "technically".
And yet, many JWs DO shun children or congregation members who are not disfellowshipped for "in house" infractions that dont appear directly in print.
Included would be, poor meeting attendance, low field service hours, marrying a "weak" person or nonbeliever, etc.
There are many more ways that you can slide up or down the scale in the JW pecking order. While the leadership may claim they leave that up to the families, there is tacit approval for doing so.