Earlier quoted context omitted.
That is about persuasion with evidence on various topics, not about persuading people to abandon safty protocols and processes and highly policed settings. Yes, many things could happen, but again, that failure is possible is not a reason to do implement processes etc. I don't see why hypotheticals should stop addressing actuals.
I’m afraid human red-teamers against supposedly highly secure targets, with lots of protocols in highly policed settings, do frequently manage this kind of social engineering. There’s loads of stories of pentesting military establishments, for example.
Also, not a reason not to pursue processes etc., no? I doubt that things fail all the time, for example.