As pointed out by others, this KM breaks no new ground. It does remind us of an interesting wrinkle in the WTS position regarding "preaching."
I think the WTS views the following two circumstances differently:
- A small group being told to stop preaching in a particular place at a particular time (examples: a group of JWs is told to leave an apartment building or a shopping mall); versus
- A government ordering all JWs in a particular country/state/city/etc. to stop preaching.
The KM mentioned by the OP is discussing situation #1. The modern WTS doesn't want to force its followers to stand up to every rogue cop or ornery building superintendent. I think this is a result of Knorr-era efforts to make JWs appear a bit more mainstream and acceptable to the outside world. This is in stark contrast to Rutherford-era tactics of deliberately violating local ordinances in order to force courts to rule on the Witnesses' constitutional rights.
Today, as long as the Witnesses are permitted to go somewhere else and preach, the WTS doesn't worry about #1 too much. In many parts of the US, there are large swaths of territory that are off-limits to the JW door-to-door work--particularly wealthy gated communities and certain apartment buildings.
If the modern WTS took the Rutherford-era approach, then Witnesses would be constantly fined (and perhaps jailed) for trespassing. This would be quite an expense...and perhaps that's why the WTS doesn't press the issue in such cases...