CTRebbe specifically, and probably others too. Let’s use logic and history.
When the Ba’al Shem Tov was around, did he have to send Rabbi’s to India or San Francisco for tourists and businessmen? Were most of the Jews yet scattered, or were they still almost centralized?
I guess the fact that there is no more Pale and that everyone is now scattered all across the globe really answers the entire question. Does it not?
And thinking of this as a grand dispersion, it is rather frightening to think about.
But, at least someone is doing it. What is the alternative? The “mainstream denominations” are more concerned about bringing everyone including non-Jews for dues. Which do you prefer?