You're spot on re the message of the paper. And also about the sheer volume of data!
From memory, there were a handful of participants who acknowledged that they needed more care, usually linked to particular precipitating events (e.g. a bad fall, hospitalisation) and their children subsequently making suggestions about changes in the house / living situation. Others didn't take on their children's suggestions but took the advice of their GP or other trusted (to them) authority. These participants spoke less about being rebellious in general and focused more on positive comparisons with others... they seemed to me to be more open to reasonable-ness.
One lady who sticks in my memory was very keen to keep her independence and refused all offers of help, until she ended up being stuck upstairs (or downstairs - I forget now) due to her mobility issues, which presented an immediate problem re access to kitchen/bathroom/etc. It was only then that she agreed to have a stairlift fitted.
I feel your pain, by the way. My relative refused all help, even when he was wheelchair bound and unable to mobilise at all (after a hip replacement, no engagement with physio and very long periods of complete inactivity), we as family were forced to beg him to take up the offer of a rehabilitation focused care home stay whilst the social services nurses stood there... he still refused, and the nurses advised us they couldn't force him as he had capacity at that time.
These experiences drive a lot of my interest in this research topic, although I was already researching it (along with others) before my relative became unwell.