I agree that when it's done in such a clumsy, insincere manner then it becomes not just pointless & tiresome, but can border on an annoyance too. You can almost picture the scene during the 'treatment of status passengers' section of the training course.

Can't say it bothers me quite as much as it does you, but I think you should let Emirates management know of your views in writing.

I would be fascinated to see their response.

(although..... the odds are it would include some trite waffle along the lines of "we find the majority of our loyal customers greatly value this personalised greeting......"