The two opening anecdotes in the article strike me as adult children in denial about their parents' decline, perhaps fearing they will be ultimately saddled with caregiving. I've been there, done that. I didn't realize Dad had lost it until I got a very panicky phone call from him "Your sister Maxxine is now in charge of everything". He had either forgotten his computer login, or been locked out by a scammer. There was no way to pay bills or even know what they all were. Oh... in the process he lost several thousand dollars to a phone scammer offering to "clean up his computer". He had always been a very smart guy, maybe a little too impressed with his own abilities. He would ask my advice off and on about computer stuff, but apparently ignored or forgot everything I told him. My sister thinks he had a couple of mini-strokes that took out some chunks of memory. In any case, Maxxine and I had a fun few months, first teaching her how to use a computer, and then tracking down accounts and passwords so the household could keep functioning. Physical decline wasn't far behind. Dad passed within a year.
I suspect these critics of diaper use haven't spent much time up close and personal with old people needing full time supervision, whether in or out of a facility. There may be a few bright minds in deteriorating bodies, but more often than not there are mental as well as physical issues involved that put them in a facility. Wandering off, random calls to police, etc. Senility/dementia play a role. Aside from the physical challenge involved in getting to a toilet, they may occasionally forget that toilets are a thing. Wetting or messing can also be attention-getting behavior, a kind of power trip if you will. Some of these folks are more like toddlers, or even infants, than adults. Over and above staffing and training issues, diapers are a matter of practicality.
I saw the "poor little me" power trip behavior decades ago when my grandma spent her last couple years living with my parents. Now I'm seeing it with my mother. Even on the occasional good day when she remembers what a toilet is, getting her to the toilet is enough of a project that success rate isn't great. On the bad days when she doesn't want to, or forgets how to cooperate, it ain't gonna happen.
I'm getting a preview of this myself. I like long walks. Recently, they removed the porta-potties along my preferred route. Making the 5 mile loop instantly become extremely uncomfortable to impossible without a diaper. 20 years ago, not a problem. I could cover 5 miles in a half hour if I had to. Now, it's more like 2 hours as old injuries and age have caught up with me. I still have cycling, although it's mostly indoors this time of year.
Along with my decreased speed, urgency has increased. When I roll out of bed and stand up in the morning, urgency is instant. So far, I've been making it down the hall, although there usually isn't time for pants or a robe. Ultimately, these issues will result in my coming out to Mrs. Maxx about diapers. While it might have been mostly a kink years ago, now it's becoming a matter of practicality.