GAW -“Since the Roshei Yeshiva are not removing such bochrim, it is obvious that they hold it is mutter. They would certainly remove someone who was convincing others to view unfiltered internet access, or even if they were doing so in public.”
Actually you can win a prize for defending smokers, no matter what – whether it’s dangerous and Ossur from the Torah -you’ll still defend them.
Why if it’s Ossur they aren’t being thrown out -is a question you have to ask them. I’m not a RY and if I would be one – I’d be from those who throw out Bochrim for smoking from their Yeshivos.
Your deduction is no deduction because s/o refusing to take action doesn’t mean that what he refuses to take action on is Mutter, acc. to them. The only way I might agree to your reasoning, is if they throw out all Poiskim from Yeshivos and e/o starts bringing their chickens & their Niddah Shailos to RY’s.
Until then, they aren’t Paskening any Shailos, including whether Smoking is Muttar or not!