I am married to a ICU physician. Neurological Critical Care is their ultimate specialty, but they practice in all parts of the critical care system: Emergency->ICU/Neuro ICU.
It's a very emotionally and mentally taxing job. Basically nothing that arrives under your care is good news. Often you know the potential outcomes before anyone else, including the other physicians who are sending someone in to your care. A large portion of the job is telling other specialities "No", either because they haven't done their job or because the case is "non survivable". This is necessary because you have a very limited number of beds in an ICU and if you fill one, someone else might very well die while waiting to be prioritized in. Because of all that, you are almost never the 'hero' in the story. The very best you hope for is that people acknowledge that you were able to keep someone alive long enough to get the treatment they ultimately need, or you were able to stabilize them enough to move to a step-down or palliative care department.
Then there are the families. The vast majority seem (based on my external observation) seem to grasp what is happening and make reasonable decisions. There are some amount of them however, who are completely ignorant of the pain and suffering they are imposing on their loved one. Over time it seems like a young ICU physician goes from seeing these families as ill-informed and possibly well meaning to seeing them as selfish and uncaring.
Externally I would say that it seems like groupthink is almost always a component of the decision making process. In a setting where just a single partner or other person is making a decision, they have a lot of empathy, if it is a family or group, they have empathy for eachother, but not for the patient. At least not in the way they think they do.
I'm not sure where I am going with this other than to say that as an observer to this almost every day, this article really just scratches the surface of this issue. I shared it with my partner and another ICU physician and their reaction was "that's minor leagues after a while, but your first few do always stick with you" to "I don't know why I even do this job."
Current example: 87 year old patient, already has metastatic cancer, had a stroke and is being "maintained" entirely by machinery. The family "Doctor, you have to do everything, we want her to make it to her 90th birthday"