Dear Printer,
A limo driver only wears his tux when he has clients.
So. if my Rosh Yeshivah smokes, I should also? And I will spend most of the week fundraising. I will mimic his walk and style of speech. Anything else?
If the issur of achrei rabbim lehatos would apply to clothing, we would be forbidden from wearing any clothes assumed by any group, even roshei yeshivos. Thankfully it is inapplicable. It would be very complicated. Maybe only the R”Y should dress like the gedolim.
These kind of ‘proofs’ make me convinced that it does not work.