Until we have a way to actually treat Alzheimer's, this seems like a mixed blessing at best. I suppose you could get your affairs in order, you but won't be enjoying much of those 10 years.
We're in the neurotech/sleeptech space and have been developing slow-wave enhancement tech for the last few years, our technology is beginning to be used in clinical studies.
These studies (using other less effective devices) have shown promise https://pmc.ncbi.nlm.nih.gov/articles/PMC10758173/ https://jcsm.aasm.org/doi/10.5664/jcsm.10778
My father tried a number of them. Some quite lovely side effects on those—-it was basically the worst night terrors ever or the shits. Neither of which makes the already difficult job for Alzheimer’s patient caregivers any easier, nor does it improve the quality or dignity of the patient’s life either.
My father’s torture with Alzheimer’s ended last year. Slowing the disease may not always be the best approach in my opinion in hindsight. If anyone is currently going through this with a loved one, my advice is to think hard about the value of slowing the disease if the patient has reached the moderate dementia stages.
When I think of "slowing the disease", I'm not thinking of the later stages, which I agree with you, what's the point.
We should be (and my company is) more focused on increasing quality of life, not time in illness.
Wills, etc should be done decades before that stage of life. As soon as one has any spouse or dependents one should do all that jazz.
You may even change your financial plans - you would know that you need to get all the life you can out of the next 10 years, and you know you will have above average costs for medical care after those 10 years. I do not envy the work/life balance decisions to be made in such a scenario, but at least you get the opportunity/burden to make them.