“youll find that many rosh yesheiva rabbanim that are well respected among our comunitty smoke. what do you say to that”
I would probably say that rabbonim are not infallible, sometimes they are not sufficiently up-to-date in certain areas, and they are subject to the same taivas as we all are. Unfortunately, as a result, they may sometimes be nichshal. That does not take away from their deserving to be respected, but a loving family member or respected peer should set them straight.