My experience of emergency engine shutdowns is thankfully limited to watching crews in the sim. In that context the vast majority of problems arise when crews rush into an approach not fully prepared. The 737 MAX is an ETOPs airplane in Norwegian (no idea if this airframe in particular was ETOPS) the idea that everyone will die a "horrible death" because the crew took a few minutes to consider the best course of action is emotive but unrealistic. Name a single 737 accident caused by a double engine failure resulting from extending the flight time after the first engine failed. For further reading of what does happen when rushing have a look at British Midland Flight 092, Kegworth.