With the new more “assertive” approach to infringements with the use of the automated system, are you saying it is set to ignore the first 200ft? If not then I was under the impression you got reported and that was that?
I think you are under the wrong impression then, but happy to be corrected.
Are you completely sure about that.
As some one else said there maybe some rare circumstances - flying in formation has been mentioned. Clearly if the transponder is transmitting duff information that is another good reason. However, again unless you know better, I can think of few good reasons for turning off the transponder.