You are both doing the same thing, trying to interpret the blue posts when there is no definitive answer anyway.

Your example of addons that were removed were because of automation, having an addon decide on who to cleanse and to do it for you is automation. In my opinion having your mouse click replicated doesn't appear to be in different in terms of automation than broadcasting a key press.

I don't really see what the real issue is here anyway, click broadcasting doesn't really allow you to do anything you couldn't just click on that screen to activate anyway.

The only problem I can see is sending a click to specific coordinatates and the fact blizzard wouldn't really be able to differentiate between that and replicating a keypress. Even then is there really any advantage at all for this? I'm not sure what I'd ever want 'clicked' in the same spot every time.