I agree that variations on this article are popping up everywhere, with a definite treatment-denial agenda behind them that goes way beyond DNR orders.
I am extremely cynical about this, having been through it a number of times. With regard to my elderly family members, forget the life-saving heroics, we had to fight for just basic care - even palliative care. My mother was refused a simple 6-week course of palliative chemotherapy that had a 60% chance of relieving her pain and possibly extending her life by two years (her doctor lied to us and told us there was a 20% chance, but a hospice nurse inadvertently let the truth slip later).
What my mother did receive was a gross excess of nuclear scans, which were profitable for the hospital, and when those scans put her into kidney failure, she was refused dialysis. They (Kaiser Permanente, btw) did not want to do anything for her, except scan her into organ failure and put her in hospice.
I've been through this four times with elderly relatives and in each instance, we were pressured to refuse therapeutic treatment. Even with my 62 year old uncle who had an entirely treatable respiratory condition, we were under intense pressure to deny him life-saving intubation. We insisted, he recovered and had six more good quality years.
Everything I've experienced tells me you should worry more about your elderly loved ones receiving enough care, rather than too much.