they have the legal right, long established, to do precisely as they do.
Maybe in the USA, but how about the other countries the JWs have a presence? Just because it is legal doesn't make it morally acceptable, either. And that legal status can always change. You also have to look at the whole package, and extrapolate where it could be heading.
Don't be such a JW apologist. You might end up with blood on your hands. To completely ignore this on the basis of one of your preferred "tactics" whatever they might be assumes that your tactics have worked to date. But have they really? What should we do, send them an email (Don't drink that!) when it's too late?
The Watchman doesn't just watch.
No matter the criticism, they will still interpret criticism as persecution.
http://144000.110mb.com/607/index.html#C