The Rabbi has a right to make Takonos to enhance the quality of davening at his Shul, even though popa-bar-abba feels otherwise.
That was precisely my point. That if the rabbi thinks it disturbs davening, then he should say that is the reason.
The rabbi does not have the right to malign people by suggesting that they are not acting courteously by not davening with the minyan, when he well knows that they are collecting at all the minyonim in town that morning.
(As for your first sentence, you misread my post.)