I don't know why people would be upset with the crew on these sorts of decisions anyway.
It's long standing policy for operators of four engine jets to continue after a single engine failure unless there is a good reason not to. The decisions are made in conjunction with dispatch, maintenance, and various other entities within the hierarchy of the operating airline. If the captain were to unilaterally make the decision to divert simply out of an abundance of caution, it would be viewed as an overreaction and disciplinary action would probably be considered by his or her superiors.
The manufacturer approved checklists for such scenarios do not say "divert to the nearest suitable airport". They do however, say to do so for engine severe damage or separation.
If you want to be upset with someone over 4 engine jets covering long distances on 3 engines, consider taking it up with the manufacturers of these aircraft and the airlines that operate them. The crews are simply doing their best to adhere to the procedural framework established by these entities.