I have some sympathy with CC. We have spoken in here before about aggressive pax at the gate and how gate staff will often pass the buck to the CC/FC. In my recent x4 sectors with a well known European based carrier they have introduced the statememt, "You must, by law, comply with instructions ..." I doubt that many hear it.
One can only look out for youself and travelling companions and be aware of obstructions and problems should need arise. As also said here, the safety record has put 95% {guess} of pax into believing it won't happen to them. Even a precautionary go round produces panic {so called by the tabloids and social media}.